A wind turbine hub assembly auxiliary tool

Abstract

The present invention belongs to the technical field of fastening auxiliary tooling, and discloses a wind turbine hub assembly auxiliary tooling, including a motor module and a nut, and also including: a wrench module, which is installed on the motor module; a material storage handle, which is located on the side of the wrench module; a supply mechanism, which is movably sleeved on the bottom of the wrench module and is used to sequentially feed the nuts in the material storage handle into the wrench module. The above scheme pushes the material storage handle downward to drive the receiving box downward so that the spring telescopic rod is stretched, so that the nut first abuts against the outer wall of the retaining ring or the connecting ring. When the height of the receiving box is at the same height as the notch of the wrench sleeve, the spring telescopic rod will also contract, so that the nut moves toward the notch of the wrench sleeve. At this time, the action of the magnetic force of the magnet will cause the nut to completely enter the wrench sleeve, thereby completing the rapid feeding operation of the nut, thereby solving the problem of low efficiency when installing the wind turbine hub by using the existing socket wrench.

Description

Technical Field

[0001] The invention belongs to the technical field of fastening auxiliary tooling, in particular to an auxiliary tooling for assembling a hub of a wind turbine generator set. Background Art

[0002] The hub of a wind turbine is the core component that connects the blades and the main shaft, and plays a key role in transmitting wind energy and bearing complex loads.

[0003] When installing a wind turbine hub, the hub is typically joined together using the internal cavity structure's mating flanges, which are then bolted together. During bolt installation, due to the small distance between each bolt, operators typically use a socket wrench. To improve installation efficiency, electric or pneumatic socket wrenches are often used to assist. However, due to the large size of a wind turbine hub, each requires dozens or even hundreds of nuts to secure it during installation. With a socket wrench, the nut must be inserted from the bottom of the socket wrench before it can be used. This frequent need to insert the nut from the bottom of the socket wrench significantly reduces the potential for improved installation efficiency. In practice, operators often need to adjust the socket wrench's orientation or bend over to insert the nut, which reduces nut placement efficiency. Therefore, to address this issue, a wind turbine hub assembly auxiliary tool has been proposed. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a wind turbine hub assembly auxiliary tool, which solves the problem of low efficiency when installing the wind turbine hub using the existing socket wrench.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an auxiliary tool for assembling a hub of a wind turbine generator set, comprising a motor module and nuts, and further comprising: a wrench module mounted on the motor module; a material storage handle located on the side of the wrench module; and a feeding mechanism movably sleeved on the bottom of the wrench module for sequentially feeding nuts from the material storage handle into the wrench module;

[0006] The wrench module includes a transmission shaft fixedly connected to the output shaft of the motor module, a connecting ring that can rotate with the transmission shaft is provided at the bottom of the transmission shaft, and a wrench sleeve is fixed to the bottom of the connecting ring, and the wrench sleeve is provided with a notch and a magnet;

[0007] The feeding mechanism includes a receiving box for storing nuts and a hollow portion provided on the receiving box for sleeved on the bottom of the wrench module. A U-shaped piece for pushing the nut to move is provided in the receiving box, and spring telescopic rods are hinged at both ends of the U-shaped piece. The external bearing of the transmission shaft is connected to an annular sleeve, and the annular sleeve is hinged to the top of the spring telescopic rod.

[0008] The material storage handle is installed on the receiving box. When the receiving box moves downward, the spring telescopic rod extends and can pull the U-shaped piece to move, thereby pushing the nut close to the notch of the wrench sleeve and allowing the nut to be attracted by the magnet.

[0009] Preferably, the bottom end of the transmission shaft passes through the connecting ring and is spline-connected to the connecting ring, and an elastic member is fixed between the top of the connecting ring and the stepped portion of the transmission shaft;

[0010] When the transmission shaft moves downward, the bottom end of the transmission shaft pushes the nut downward in the wrench sleeve.

[0011] Preferably, a guide groove is provided on the transmission shaft, and a connecting frame is movably sleeved on the outside of the transmission shaft, the connecting frame is fixedly connected to the material storage handle, and a convex shaft that can slide in the guide groove is fixedly connected to the connecting frame;

[0012] The top of the guide groove is a funnel groove covered on the outside of the transmission shaft, and the bottom of the guide groove is a vertical groove covered on the outside of the transmission shaft. When the convex shaft is in the vertical groove, the notch on the wrench sleeve corresponds to the direction of delivery of the nut on the receiving box.

[0013] Preferably, the wrench sleeve is further provided with an elastic limiting member for sealing the notch of the wrench sleeve, and the elastic limiting member has an upward trend on the wrench sleeve due to its own elastic force;

[0014] When the receiving box moves downward, it can squeeze the elastic limiting piece downward and be misaligned with the notch of the wrench sleeve.

[0015] Preferably, a limiting ring is fixedly connected to the top of the outer periphery of the elastic limiting member, and the limiting ring is movably sleeved on the outside of the wrench sleeve;

[0016] When the receiving box moves downward, the bottom of the receiving box drives the elastic limiting member downward by squeezing the limiting ring.

[0017] Preferably, a retaining ring having a diameter equal to that of the connecting ring and the wrench sleeve is fixed to the top of the connecting ring, and the hollow portion is sleeved on the outside of the retaining ring in an initial state.

[0018] Preferably, an elastic stopper is symmetrically fixed to the middle of the receiving box, and the nut can squeeze the elastic stopper and accumulate force when it moves horizontally in the receiving box, and when the nut passes over the elastic stopper, it will be affected by the elastic force of the elastic stopper and move away from the U-shaped part.

[0019] Preferably, the material storage handle includes a material storage barrel fixedly mounted on the receiving box and used for storing nuts, an elastic sleeve is sleeved on the outside of the material storage barrel, and the elastic sleeve has an upward trend on the material storage barrel; the connecting frame is fixedly connected to the elastic sleeve.

[0020] Preferably, a sleeve cover is threadedly connected to the top of the storage barrel, and a rod that can be inserted into the threaded hole of the nut is fixed to the sleeve cover;

[0021] The rod extends to the top of the receiving box and a gap is reserved between the rod and the bottom of the receiving box for the nut to pass through.

[0022] Preferably, a spring combination gasket is sleeved on the outside of the rod, and the spring portion of the spring combination gasket is fixedly connected to the sleeve cover so that the gasket portion of the spring combination gasket has a downward trend.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The above solution pushes the material storage handle downward to drive the receiving box downward to stretch the spring telescopic rod. At the same time, the bottom end of the spring telescopic rod also pulls the U-shaped piece and drives the nut to move, so that the nut first abuts against the outer wall of the retaining ring or the connecting ring. When the height of the receiving box is at the same height as the notch of the wrench sleeve, the spring telescopic rod will also contract, so that the nut moves toward the notch of the wrench sleeve. At this time, the magnetic force of the magnet will make the nut completely enter the wrench sleeve, thereby completing the rapid loading operation of the nut, thereby solving the problem of low efficiency when using the existing socket wrench in installing the wind turbine hub;

[0025] In the above scheme, when the material storage handle moves downward, the material storage barrel on it will move downward first and drive the connecting frame to move synchronously, so that the convex shaft enters the top of the vertical groove part of the guide groove from the funnel groove part of the guide groove. During this process, the transmission shaft will rotate, and then drive the connecting ring and the wrench sleeve to rotate, so that the notch on the wrench sleeve faces the nut in the receiving box, further improving the nut placement efficiency;

[0026] The above scheme drives the elastic limit member downward by squeezing the limit ring during the downward movement of the receiving box, and opens the notch of the wrench sleeve, which facilitates the entry of the nut in the receiving box into the wrench sleeve. When the storage handle and the feeding mechanism are reset upward, the elastic limit member will also be reset and fill the notch of the wrench sleeve, and the limit ring will be sleeved on the outside of the wrench sleeve and the elastic limit member and tighten the connection between the two, thereby ensuring that the subsequent wrench module will avoid the notch of the wrench sleeve from separating from the nut during the process of rotating to tighten the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a structural diagram of the wrench module of the present invention;

[0029] Figure 3 This is a schematic diagram of the split structure of the wrench module of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the nut feeding mechanism of the present invention;

[0031] Figure 5 This is a schematic diagram of the top cross-sectional structure of the receiving box of the present invention;

[0032] Figure 6 Schematic diagram of the matching structure of the limiter and the wrench sleeve of the present invention;

[0033] Figure 7 This is a front cross-sectional structural diagram of the wrench sleeve of the present invention;

[0034] Figure 8 This is a schematic diagram of the front cross-sectional structure of the storage handle of the present invention.

[0035] In the figure: 1. Motor module; 2. Wrench module; 21. Transmission shaft; 211. Guide groove; 212. Elastic member; 22. Connecting ring; 221. Retaining ring; 23. Wrench sleeve; 231. Elastic limit member; 232. Limiting ring; 233. Magnet; 3. Feeding mechanism; 31. Receiving box; 311. Hollow part; 312. Elastic stop member; 32. U-shaped member; 33. Spring telescopic rod; 34. Annular sleeve; 4. Storage handle; 41. Storage barrel; 42. Elastic sleeve; 43. Sleeve cover; 44. Rod; 45. Spring combination gasket; 5. Connecting frame; 51. Protruding shaft; 6. Nut. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0037] like Figures 1 to 8 As shown, the present invention provides a wind turbine hub assembly auxiliary tool, comprising a motor module 1 and a nut 6, and further comprising: a wrench module 2, which is mounted on the motor module 1; a material storage handle 4, which is located on the side of the wrench module 2; a feeding mechanism 3, which is movably sleeved on the bottom of the wrench module 2 and is used to sequentially feed the nuts 6 in the material storage handle 4 into the wrench module 2;

[0038] The wrench module 2 includes a transmission shaft 21 fixedly connected to the output shaft of the motor module 1. A connecting ring 22 that can rotate with the transmission shaft 21 is provided at the bottom of the transmission shaft 21, and a wrench sleeve 23 is fixedly connected to the bottom of the connecting ring 22. The wrench sleeve 23 is provided with a notch and a magnet 233;

[0039] The feeding mechanism 3 includes a receiving box 31 for storing the nut 6 and a hollow portion 311 provided thereon for being mounted on the bottom of the wrench module 2. A U-shaped member 32 for pushing the nut 6 is provided in the receiving box 31, and a spring telescopic rod 33 is hinged at both ends of the U-shaped member 32. An annular sleeve 34 is connected to the external bearing of the transmission shaft 21, and the annular sleeve 34 is hinged to the top of the spring telescopic rod 33.

[0040] The storage handle 4 is mounted on the receiving box 31. When the receiving box 31 moves downward, the spring telescopic rod 33 extends and can pull the U-shaped piece 32 to move, thereby pushing the nut 6 close to the notch of the wrench sleeve 23 so that the nut 6 can be attracted by the magnet 233.

[0041] The bottom end of the transmission shaft 21 passes through the connecting ring 22 and is spline-connected to the connecting ring 22. An elastic member 212 is fixed between the top of the connecting ring 22 and the stepped portion of the transmission shaft 21. When the transmission shaft 21 moves downward, its bottom end can push the nut 6 downward in the wrench sleeve 23.

[0042] When the receiving box 31 is pushed downward, the spring telescopic rod 33 is stretched, and at the same time, the bottom end of the spring telescopic rod 33 pulls the U-shaped piece 32 and drives the nut 6 to move, so that the nut 6 first abuts against the retaining ring 221 or the outer wall of the connecting ring 22. When the height of the receiving box 31 is at the same height as the notch of the spanner sleeve 23, the spring telescopic rod 33 is further contracted, so that the nut 6 moves toward the notch of the spanner sleeve 23. At this time, the magnetic force of the magnet 233 is combined to make the nut 6 completely enter the spanner sleeve 23, thereby completing the rapid loading operation of the nut 6, thereby solving the problem of low efficiency when installing the wind turbine hub by using the existing socket wrench;

[0043] It is worth noting that when the operator holds the motor module 1 with one hand, the other hand can hold the material storage handle 4 to keep the device as a whole stable when installing the nuts 6. In order to ensure stability, the operator will pull the material storage handle 4 while holding the material storage handle 4 and drive the feeding mechanism 3 to move toward the motor module 1, which also avoids the situation in which the operator accidentally pushes the feeding mechanism 3 to continue placing the next set of nuts 6 during the process of tightening the wind turbine hub, thereby affecting the operation of the device.

[0044] At the same time, the tension of the spring telescopic rod 33 itself is in a retracted state when the operator does not apply downward force to the storage handle 4. Therefore, when the operator pushes the feeding mechanism 3 downward and lets go, the feeding mechanism 3 as a whole is reset by the tension of the spring telescopic rod 33.

[0045] Furthermore, the operator can lower the height of the annular sleeve 34 and increase the inclination of the spring telescopic rod 33 to ensure that the spring telescopic rod 33 can pull the U-shaped part 32 to move when the storage handle 4 pushes the receiving box 31 downward, thereby avoiding the situation where the spring telescopic rod 33 stretches during the downward process of the receiving box 31 and cannot pull the U-shaped part 32 to move.

[0046] like Figure 1-4 and Figure 6 As shown, a guide groove 211 is provided on the transmission shaft 21, and a connecting frame 5 is movably sleeved on the outside of the transmission shaft 21. The connecting frame 5 is fixedly connected to the storage handle 4, and a convex shaft 51 that can slide in the guide groove 211 is fixedly connected to the connecting frame 5;

[0047] The top of the guide groove 211 is a funnel groove covering the outside of the transmission shaft 21, while the bottom of the guide groove 211 is a vertical groove covering the outside of the transmission shaft 21. When the protruding shaft 51 is in the vertical groove, the notch on the wrench sleeve 23 corresponds to the direction of delivery of the nut 6 on the receiving box 31.

[0048] By adopting the above scheme, when the material storage handle 4 moves downward, the material storage barrel 41 on it will move downward first and drive the connecting frame 5 to move synchronously, so that the convex shaft 51 enters the top of the vertical groove part of the guide groove 211 from the funnel groove part of the guide groove 211. In this process, the transmission shaft 21 will rotate, and then drive the connecting ring 22 and the wrench sleeve 23 to rotate, so that the notch on the wrench sleeve 23 faces the nut 6 in the receiving box 31, further improving the placement efficiency of the nut.

[0049] like Figure 2 、 Figure 3 、 Figure 6 and Figure 7 As shown, the spanner sleeve 23 is further provided with an elastic limiting member 231 for sealing the notch of the spanner sleeve 23. The elastic limiting member 231 has an upward trend on the spanner sleeve 23 due to its own elastic force; when the receiving box 31 moves downward, it can squeeze the elastic limiting member 231 downward and displace it with the notch of the spanner sleeve 23;

[0050] The top of the outer periphery of the elastic limiting member 231 is also fixedly connected to a limiting ring 232, and the limiting ring 232 is also movably sleeved on the outside of the wrench sleeve 23; when the receiving box 31 moves downward, its bottom can drive the elastic limiting member 231 downward by squeezing the limiting ring 232;

[0051] By adopting the above scheme, during the downward movement of the receiving box 31, the limiting ring 232 will be squeezed by the limiting ring 232 to drive the elastic limiting member 231 downward, and the notch portion of the wrench sleeve 23 will be opened, so that the nut 6 in the receiving box 31 can enter the wrench sleeve 23. When the storage handle 4 and the feeding mechanism 3 are reset upward, the elastic limiting member 231 will also be reset and fill the notch portion of the wrench sleeve 23, and the limiting ring 232 will be sleeved on the outside of the wrench sleeve 23 and the elastic limiting member 231 and tighten the connection between the two, thereby ensuring that the subsequent wrench module 2 will avoid the notch of the wrench sleeve 23 from separating from the nut 6 during the process of rotating to tighten the nut 6.

[0052] like Figure 4 and Figure 5 As shown, a retaining ring 221 having a diameter equal to that of the connecting ring 22 and the wrench sleeve 23 is fixed to the top of the connecting ring 22, and the hollow portion 311 is sleeved on the outside of the retaining ring 221 in the initial state;

[0053] An elastic stopper 312 is symmetrically fixed to the middle of the receiving box 31. When the nut 6 moves horizontally in the receiving box 31, it can squeeze the elastic stopper 312 and store force. When the nut 6 passes over the elastic stopper 312, it will be affected by the elastic force of the elastic stopper 312 and move away from the U-shaped member 32.

[0054] With the above solution, since the pushing distance of the spring telescopic rod 33 is limited, when the U-shaped part 32 pushes the nut 6 over the elastic stopper 312, the elastic stopper 312 with stored force can push the nut 6 to pop out into the wrench sleeve 23, and cooperate with the adsorption of the magnet 233 to accurately send the nut 6 into the wrench sleeve 23 and avoid the problem of material jamming.

[0055] like Figure 1 and Figure 8 As shown, the storage handle 4 includes a storage barrel 41 fixedly mounted on the receiving box 31 and used to store the nuts 6. An elastic sleeve 42 is sleeved on the outside of the storage barrel 41. The elastic sleeve 42 has an upward trend on the storage barrel 41. The connecting frame 5 is fixedly connected to the elastic sleeve 42.

[0056] The top of the storage barrel 41 is threadedly connected to a sleeve cover 43, and the sleeve cover 43 is fixed with a rod 44 that can be inserted into the threaded hole of the nut 6;

[0057] The rod 44 extends to the top of the receiving box 31 and leaves a gap with the bottom of the receiving box 31 for the nut 6 to pass through;

[0058] A spring combination gasket 45 is sleeved on the outside of the rod 44, and the spring portion of the spring combination gasket 45 is fixedly connected to the sleeve cover 43 so that the gasket portion of the spring combination gasket 45 has a downward trend;

[0059] By adopting the above scheme, after placing the nuts 6 into the storage barrel 41 in sequence, the sleeve cover 43 is tightened on the top of the storage barrel 41 and the sleeve cover 43 is inserted into the threaded hole of the nut 6. At the same time, the spring combination gasket 45 will also be compressed and stored, and its bottom will squeeze the uppermost nut 6, so that several groups of nuts 6 have a downward trend, so that when the operator installs and tightens the nuts 6 in any direction, the storage handle 4 can transport the nuts 6 to the supply mechanism 3.

[0060] The working principle and use process of the present invention:

[0061] When the receiving box 31 is lowered, the operator pushes the material storage handle 4 downward to move the receiving box 31 downward. At this time, the spring telescopic rod 33 is stretched, and at the same time, its bottom end also pulls the U-shaped piece 32 and drives the nut 6 to move, so that the nut 6 first abuts against the retaining ring 221 or the outer wall of the connecting ring 22. When the height of the receiving box 31 is at the same height as the notch of the spanner sleeve 23, the spring telescopic rod 33 is further contracted, so that the nut 6 moves toward the notch of the spanner sleeve 23. At this time, the magnetic force of the magnet 233 is combined to make the nut 6 completely enter the spanner sleeve 23, thereby completing the rapid loading operation of the nut 6.

[0062] As the material storage handle 4 moves downward, the material storage barrel 41 moves downward first and drives the connecting frame 5 to move synchronously, so that the convex shaft 51 enters the top of the vertical groove portion of the guide groove 211 from the funnel groove portion of the guide groove 211. This process causes the transmission shaft 21 to rotate, thereby driving the connecting ring 22 and the spanner sleeve 23 to rotate, so that the notch on the spanner sleeve 23 faces the nut 6 in the receiving box 31, further improving the nut placement efficiency;

[0063] When the receiving box 31 is moved downward, the limiting ring 232 will squeeze the limiting ring 232 to drive the elastic limiting member 231 downward, and the notch of the spanner sleeve 23 will be opened, so that the nut 6 in the receiving box 31 can enter the spanner sleeve 23. When the material storage handle 4 and the feeding mechanism 3 are reset upward, the elastic limiting member 231 will also be reset and fill the notch of the spanner sleeve 23, and the limiting ring 232 will be sleeved on the outside of the spanner sleeve 23 and the elastic limiting member 231 and tighten the connection between the two, thereby ensuring that the notch of the spanner sleeve 23 will not separate from the nut 6 during the subsequent rotation of the spanner module 2 to tighten the nut 6.

[0064] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0065] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine hub assembly auxiliary tool, comprising a motor module (1) and a nut (6), characterized in that: Also includes: A wrench module (2) mounted on the motor module (1); A material storage handle (4) located on the side of the wrench module (2); A feeding mechanism (3) is movably sleeved on the bottom of the wrench module (2) and is used to sequentially feed the nuts (6) in the storage handle (4) into the wrench module (2); The wrench module (2) comprises a transmission shaft (21) fixedly connected to the output shaft of the motor module (1); a connecting ring (22) rotating with the transmission shaft (21) is provided at the bottom of the transmission shaft (21); a wrench sleeve (23) is fixedly connected to the bottom of the connecting ring (22); and a notch and a magnet (233) are provided on the wrench sleeve (23); The supply mechanism (3) comprises a receiving box (31) for storing the nut (6) and a hollow portion (311) provided thereon for being sleeved on the bottom of the wrench module (2); a U-shaped member (32) for pushing the nut (6) to move is provided in the receiving box (31), and both ends of the U-shaped member (32) are hingedly connected to a spring telescopic rod (33); an external bearing of the transmission shaft (21) is connected to an annular sleeve (34), and the annular sleeve (34) is hingedly connected to the top end of the spring telescopic rod (33); The material storage handle (4) is mounted on the receiving box (31). When the receiving box (31) moves downward, the spring telescopic rod (33) stretches and can pull the U-shaped member (32) to move, thereby pushing the nut (6) close to the notch of the wrench sleeve (23) and causing the nut (6) to be attracted by the magnet (233). A guide groove (211) is provided on the transmission shaft (21), and a connecting frame (5) is movably sleeved on the outside of the transmission shaft (21). The connecting frame (5) is fixedly connected to the material storage handle (4), and a convex shaft (51) is fixedly connected to the connecting frame (5) and slides in the guide groove (211); The top of the guide groove (211) is a funnel groove covering the outside of the transmission shaft (21), and the bottom of the guide groove (211) is a vertical groove covering the outside of the transmission shaft (21). When the convex shaft (51) is in the vertical groove, the notch on the wrench sleeve (23) corresponds to the direction of delivery of the nut (6) on the receiving box (31); The spanner sleeve (23) is further provided with an elastic limiting member (231) for sealing the notch of the spanner sleeve (23), and the elastic limiting member (231) has an upward trend on the spanner sleeve (23) due to its own elastic force; When the receiving box (31) moves downward, it squeezes the elastic limiting member (231) downward and is misaligned with the notch of the spanner sleeve (23); The top of the outer periphery of the elastic limiting member (231) is also fixedly connected to a limiting ring (232), and the limiting ring (232) is also movably sleeved on the outside of the wrench sleeve (23); When the receiving box (31) moves downward, its bottom can drive the elastic limiting member (231) downward by squeezing the limiting ring (232).

2. The wind turbine hub assembly auxiliary tool according to claim 1, characterized in that: The bottom end of the transmission shaft (21) passes through the connecting ring (22) and is spline-connected to the connecting ring (22); an elastic member (212) is fixed between the top of the connecting ring (22) and the stepped portion of the transmission shaft (21); When the transmission shaft (21) moves downward, its bottom end can push the nut (6) downward in the wrench sleeve (23).

3. The wind turbine hub assembly auxiliary tool according to claim 1, characterized in that: A retaining ring (221) having a diameter equal to that of the connecting ring (22) and the wrench sleeve (23) is also fixed to the top of the connecting ring (22), and in an initial state, the hollow portion (311) is sleeved outside the retaining ring (221).

4. The wind turbine hub assembly auxiliary tool according to claim 1, characterized in that: The storage handle (4) comprises a storage barrel (41) fixedly mounted on the receiving box (31) and used for storing nuts (6); an elastic sleeve (42) is sleeved on the outside of the storage barrel (41); and the elastic sleeve (42) has an upward trend on the storage barrel (41); The connecting frame (5) is fixedly connected to the elastic sleeve (42).

5. The auxiliary tool for assembling the hub of a wind turbine generator set according to claim 4, characterized in that: The top of the storage barrel (41) is threadedly connected to a sleeve cover (43), and the sleeve cover (43) is fixedly connected to a rod (44) that can be inserted into the threaded hole of the nut (6); The rod (44) extends to the top of the receiving box (31) and leaves a gap with the bottom of the receiving box (31) for the nut (6) to pass through.

6. The auxiliary tool for assembling the hub of a wind turbine generator set according to claim 5, characterized in that: The rod (44) is externally sleeved with a spring combination gasket (45), and the spring portion of the spring combination gasket (45) is fixedly connected to the sleeve cover (43) so that the gasket portion of the spring combination gasket (45) has a downward trend.

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