Auxiliary tool for assembling hub of wind generating set

Abstract

The invention belongs to the technical field of fastening auxiliary tools, and discloses a wind generating set hub assembly auxiliary tool which comprises a motor module and a nut and further comprises a wrench module installed on the motor module; the storage handle is located on the side face of the wrench module; and the supply mechanism is movably arranged at the bottom of the wrench module in a sleeving mode and used for sequentially feeding the nuts in the storage handle into the wrench module. According to the scheme, the storage handle is pushed to move downwards to drive the bearing box to move downwards so that the spring telescopic rod can be stretched, the nut can abut against the outer wall of the baffle ring or the outer wall of the connecting ring in advance, and when the bearing box and the notch of the wrench sleeve are located at the same height, the spring telescopic rod can contract, so that the nut moves towards the notch of the wrench sleeve; and at the moment, the nut can completely enter the wrench sleeve under the action of magnetic force of the magnet, so that rapid feeding operation of the nut is completed, and the problem that the efficiency is low when a wind power hub is installed through an existing socket wrench is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of fastening auxiliary tools, and specifically relates to an auxiliary tool for assembling a wind turbine hub. Background Art

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

[0003] When installing a wind power hub, it is generally spliced through the docking flange of its internal cavity structure and the internal docking flanges are connected by bolts. During the process of installing the bolts, since the distance between each bolt is small, an operator generally uses a socket wrench. In order to improve the installation efficiency of the operator, an electric socket wrench or a pneumatic socket wrench is generally used to assist in the installation. However, due to the large volume of the wind power hub, dozens or hundreds of nuts are required for fixing each one during installation. For a socket wrench, the nut needs to be placed from the bottom of the socket wrench before it can be used. This frequent placement of the nut from the bottom of the socket wrench greatly reduces the effect of improving the installation efficiency. In the actual process, when the operator places the nut, he also needs to turn the socket wrench or bend down to place it, which will reduce the placement efficiency of the nut. Therefore, to solve the above problems, an auxiliary tool for assembling a wind turbine hub is proposed. Summary of the Invention

[0004] To solve the problems raised in the above background art, the invention provides an auxiliary tool for assembling a wind turbine hub, which solves the problem of low efficiency in installing a wind power hub with an existing socket wrench.

[0005] To achieve the above object, the invention provides the following technical solution: An auxiliary tool for assembling a wind turbine hub includes a motor module and nuts, and further includes: a wrench module installed on the motor module; a storage handle located on the side of the wrench module; a supply mechanism movably sleeved on the bottom of the wrench module for sequentially feeding the nuts in the storage handle into the wrench module; 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 arranged at the bottom of the transmission shaft, and a socket is fixedly connected to the bottom of the connecting ring. The socket is provided with a notch and a magnet; The supply mechanism includes a receiving box for storing nuts and a hollow part opened thereon for sleeving on the bottom of the wrench module. A U-shaped member for pushing the nuts to move is arranged in the receiving box, and spring telescopic rods are hinged to both ends of the U-shaped member. An annular bushing is connected to the outside of the transmission shaft by bearings, and the annular bushing is hinged to the top ends of the spring telescopic rods; The 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 part to move, thereby pushing the nut close to the notch of the wrench sleeve and making the nut adsorbed by the magnet.

[0006] Preferably, the bottom end of the transmission shaft penetrates through the connecting ring and is splined to the connecting ring. An elastic member is fixedly connected between the top of the connecting ring and the stepped portion of the transmission shaft. When the transmission shaft moves downward, its bottom end pushes the nut to move downward within the wrench sleeve.

[0007] Preferably, a guiding groove is formed on the transmission shaft. An adjusting frame is also movably sleeved outside the transmission shaft. The adjusting frame is fixedly connected to the storage handle. A convex shaft that can slide within the guiding groove is fixedly connected to the adjusting frame. The top of the guiding groove is a funnel-shaped groove that wraps around the outside of the transmission shaft, while the bottom of the guiding groove is a vertical groove that wraps around 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 nut delivery on the receiving box.

[0008] Preferably, an elastic limiting member for blocking the notch of the wrench sleeve is further provided on the wrench sleeve. The elastic limiting member has an upward trend on the wrench sleeve under the action of its own elastic force. When the receiving box moves downward, it can squeeze the elastic limiting member to move downward and be misaligned with the notch of the wrench sleeve.

[0009] Preferably, a limiting ring is further fixedly connected to the top of the outer periphery of the elastic limiting member. The limiting ring is also movably sleeved outside the wrench sleeve. When the receiving box moves downward, the bottom of it drives the elastic limiting member to move downward by squeezing the limiting ring.

[0010] Preferably, a retaining ring with the same diameter as the connecting ring and the wrench sleeve is further fixedly connected to the top of the connecting ring. In the initial state, the hollow part is sleeved outside the retaining ring.

[0011] Preferably, elastic blocking members are symmetrically and fixedly connected to the middle of the receiving box. When the nut moves horizontally within the receiving box, it can also squeeze the elastic blocking members to store energy, and when the nut passes over the elastic blocking members, it will be subjected to the elastic force of the elastic blocking members and move away from the U-shaped part.

[0012] Preferably, the storage handle includes a storage cylinder fixedly installed on the receiving box and used for storing nuts. An elastic sleeve is sleeved outside the storage cylinder. The elastic sleeve has an upward trend on the storage cylinder. The adjusting frame is fixedly connected to the elastic sleeve.

[0013] Preferably, a sleeve cover is threadedly connected to the top of the storage cylinder. A rod member that can be inserted into the threaded hole of the nut is fixedly connected to the sleeve cover. The rod member extends to the top of the receiving box and has a gap reserved at the bottom of the receiving box for the nut to pass through.

[0014] Preferably, a spring combination gasket is sleeved outside the rod, and the spring part of the spring combination gasket is fixedly connected to the sleeve cover, causing the gasket part of the spring combination gasket to have a downward trend.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the above solution, pushing the material storage handle downward drives the receiving box downward, stretching the spring telescopic rod. At the same time, the bottom end of the spring telescopic rod also pulls the U-shaped part and drives the nut to move, so that the nut first abuts against the outer wall of the retaining ring or 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 contract, causing the nut to move towards the notch of the wrench sleeve. At this time, with the action of the magnetism, the nut will completely enter the wrench sleeve, thus completing the rapid feeding operation of the nut, and solving the problem of low efficiency when installing a wind power hub with an existing socket wrench. In the above solution, when the material storage handle moves downward, the material storage cylinder part 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, driving 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 placement efficiency of the nut. In the above solution, when the receiving box moves downward, the limiting ring will also squeeze the limiting ring to drive the elastic limiting member to move downward, and open the notch part of the wrench sleeve. At this time, it is convenient for the nut in the receiving box to enter the wrench sleeve. When the material storage handle and the supply mechanism move upward and reset, the elastic limiting member will also reset and fill the notch part of the wrench sleeve, while the limiting ring will be sleeved outside the wrench sleeve and the elastic limiting member to fasten the connection between the two, thus ensuring that during the subsequent rotation of the wrench module to tighten the nut, the situation where the notch of the wrench sleeve disengages from the nut is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the wrench module of the present invention; Figure 3 is a schematic diagram of the disassembled structure of the wrench module of the present invention; Figure 4 is a schematic diagram of the structure of the nut supply mechanism of the present invention; Figure 5 is a schematic diagram of the top cross-sectional structure of the receiving box of the present invention; Figure 6 is a schematic diagram of the cooperation structure of the limiting member and the wrench sleeve of the present invention; Figure 7 is a schematic diagram of the front cross-sectional structure of the wrench sleeve of the present invention; Figure 8 This is a front sectional view structural diagram of the storage handle of the present invention.

[0017] 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 limiting member; 232, limiting ring; 233, magnet; 3, supply mechanism; 31, receiving box; 311, hollowed-out part; 312, elastic blocking member; 32, U-shaped member; 33, spring telescopic rod; 34, annular shaft sleeve; 4, storage handle; 41, storage cylinder; 42, elastic sleeve; 43, sleeve cover; 44, rod member; 45, spring combination gasket; 5, connecting frame; 51, convex shaft; 6, nut. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1 to 8 shown, the present invention provides an auxiliary tooling for the assembly of a wind turbine hub, including a motor module 1 and a nut 6, and further including: a wrench module 2, which is installed on the motor module 1; a storage handle 4, which is located on the side of the wrench module 2; a supply mechanism 3, which is movably sleeved at the bottom of the wrench module 2 for sequentially feeding the nuts 6 in the storage handle 4 into the wrench module 2; 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; The supply mechanism 3 includes a receiving box 31 for storing nuts 6 and a hollowed-out part 311 opened thereon for sleeving at the bottom of the wrench module 2. A U-shaped member 32 for pushing the nuts 6 to move is arranged in the receiving box 31, and spring telescopic rods 33 are hinged to both ends of the U-shaped member 32. An annular shaft sleeve 34 is connected to the outside of the transmission shaft 21 by bearings, and the annular shaft sleeve 34 is hinged to the top ends of the spring telescopic rods 33; The storage handle 4 is installed on the receiving box 31. When the receiving box 31 moves downward, the spring telescopic rods 33 extend and can pull the U-shaped member 32 to move, so as to push the nuts 6 close to the notch of the wrench sleeve 23 and enable the nuts 6 to be adsorbed by the magnet 233; The bottom end of the transmission shaft 21 penetrates through the connecting ring 22 and is splined to the connecting ring 22. An elastic member 212 is fixedly connected 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 to move downward within the wrench socket 23.

[0020] With the above solution, by pushing the material storage handle 4 downward, the receiving box 31 is driven to move downward, stretching the spring telescopic rod 33. At the same time, the bottom end of the spring telescopic rod 33 will also pull the U-shaped member 32 and drive 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 wrench socket 23, the spring telescopic rod 33 will contract, so that the nut 6 moves towards the notch of the wrench socket 23. At this time, with the action of the magnetic force of the magnet 233, the nut 6 will completely enter the wrench socket 23, thus completing the rapid feeding operation of the nut 6, and solving the problem of low efficiency when installing the wind power hub through the existing socket wrench. It should be noted that when an operator holds the motor module 1 with one hand, the other hand can hold the material storage handle 4 to keep the whole device stable when installing the nut 6. To ensure stability, when the operator holds the material storage handle 4, the operator will also pull the material storage handle 4 and drive the feeding mechanism 3 to have a tendency to move towards the motor module 1, which also avoids the situation that during the process of the operator tightening the wind power hub, due to misoperation, the feeding mechanism 3 is pushed to continue placing the next group of nuts 6, which affects the operation of the device. At the same time, due to the pulling force of the spring telescopic rod 33 itself, it is in a contracted state when the operator does not apply a downward thrust to the material storage handle 4. Therefore, when the operator pushes the feeding mechanism 3 downward and then releases the hand, the whole feeding mechanism 3 can be reset under the pulling force of the spring telescopic rod 33. Furthermore, the operator can ensure that when the material storage handle 4 pushes the receiving box 31 downward, the spring telescopic rod 33 can pull the U-shaped member 32 to move by lowering the height of the annular shaft sleeve 34 and increasing the inclination of the spring telescopic rod 33, avoiding the situation that the spring telescopic rod 33 elongates during the downward movement of the receiving box 31 and cannot pull the U-shaped member 32 to move.

[0021] As Figures 1-4 and Figure 6 shown, a guide groove 211 is formed on the transmission shaft 21. A connecting frame 5 is also movably sleeved outside the transmission shaft 21. The connecting frame 5 is fixedly connected to the material storage handle 4, and a convex shaft 51 that can slide in the guide groove 211 is fixedly connected to the connecting frame 5. 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 part, the notch on the wrench socket 23 corresponds to the direction of the nut 6 delivery on the receiving box 31. Adopting the above solution, when the storage handle 4 moves downward, the part of the storage cylinder 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 guiding groove 211 from the funnel groove part of the guiding groove 211. During 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.

[0022] As Figure 2 , Figure 3 , Figure 6 and Figure 7 shown, an elastic limiting member 231 for blocking the notch of the wrench sleeve 23 is further provided on the wrench sleeve 23. The elastic limiting member 231 has an upward trend on the wrench sleeve 23 under the action of its own elastic force; when the receiving box 31 moves downward, it can squeeze the elastic limiting member 231 to move downward and be misaligned with the notch of the wrench sleeve 23; A limiting ring 232 is fixedly connected to the outer periphery top of the elastic limiting member 231, and the limiting ring 232 is also movably sleeved outside the wrench sleeve 23; when the receiving box 31 moves downward, the bottom of it can drive the elastic limiting member 231 to move downward by squeezing the limiting ring 232; Adopting the above solution, during the process of the receiving box 31 moving downward, the elastic limiting member 231 will also be driven to move downward by squeezing the limiting ring 232 through the limiting ring 232, and the notch part of the wrench sleeve 23 will be opened. At this time, it is convenient for the nut 6 in the receiving box 31 to enter the wrench sleeve 23. When the storage handle 4 and the supply mechanism 3 move upward and reset, the elastic limiting member 231 will also reset and fill the notch part of the wrench sleeve 23, and the limiting ring 232 will be sleeved outside the wrench sleeve 23 and the elastic limiting member 231 and fasten the connection between the two, so as to ensure that during the subsequent rotation of the wrench module 2 to tighten the nut 6, the situation that the notch of the wrench sleeve 23 disengages from the nut 6 is avoided.

[0023] As Figure 4 and Figure 5 shown, a retaining ring 221 with a diameter equal to that of the connecting ring 22 and the wrench sleeve 23 is fixedly connected to the top of the connecting ring 22. In the initial state, the hollow part 311 is sleeved outside the retaining ring 221; Elastic blocking members 312 are symmetrically fixedly connected to the middle of the receiving box 31. When the nut 6 moves horizontally in the receiving box 31, it can squeeze the elastic blocking members 312 and make them store energy, and when the nut 6 passes over the elastic blocking members 312, it will be subjected to the elastic force of the elastic blocking members 312 and move away from the U-shaped member 32; Adopting the above solution, since the pushing distance of the spring telescopic rod 33 is limited, when the U-shaped member 32 pushes the nut 6 over the elastic blocking member 312, the energized elastic blocking member 312 can push the nut 6 out into the wrench sleeve 23, and with the adsorption of the magnet 233, the nut 6 can be accurately sent into the wrench sleeve 23 and the situation of material jamming can be avoided.

[0024] As Figure 1 and Figure 8 shown, the storage handle 4 includes a storage cylinder 41 fixedly installed on the receiving box 31 and used for storing nuts 6. An elastic sleeve 42 is sleeved outside the storage cylinder 41, and the elastic sleeve 42 has an upward trend on the storage cylinder 41; the connecting frame 5 is fixedly connected to the elastic sleeve 42; A sleeve cover 43 is threadedly connected to the top of the storage cylinder 41, and a rod 44 that can be inserted into the threaded hole of the nut 6 is fixedly connected to the sleeve cover 43; The rod 44 extends to the top of the receiving box 31 and has a gap reserved at the bottom of the receiving box 31 for the nut 6 to pass through; A spring combination gasket 45 is sleeved outside the rod 44, and the spring part of the spring combination gasket 45 is fixedly connected to the sleeve cover 43 and makes the gasket part of the spring combination gasket 45 have a downward trend; With the above scheme, after the nuts 6 are sequentially placed in the storage cylinder 41, the sleeve cover 43 is screwed tightly on the top of the storage cylinder 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 store energy, and its bottom will squeeze the uppermost nut 6, so that several groups of nuts 6 all have a downward trend, so that when the operator installs and tightens the nut 6 in any direction, the storage handle 4 can convey the nut 6 to the supply mechanism 3.

[0025] The working principle and usage process of the present invention: First, the operator pushes the storage handle 4 downward to make the receiving box 31 move downward. At this time, the spring telescopic rod 33 will be stretched, and at the same time, its bottom end will also pull the U-shaped part 32 and drive 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 wrench sleeve 23, the spring telescopic rod 33 will also contract, so that the nut 6 moves toward the notch of the wrench sleeve 23. At this time, with the action of the magnetic force of the magnet 233, the nut 6 will completely enter the wrench sleeve 23, thus completing the rapid feeding operation of the nut 6; During the downward movement of the storage handle 4, a part of the storage cylinder 41 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. During 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; During the downward movement of the receiving box 31, the limiting ring 232 will also be squeezed by the limiting ring 232 to drive the elastic limiting member 231 to move downward, and the notch part of the wrench sleeve 23 will be opened. At this time, it is convenient for the nut 6 in the receiving box 31 to enter the wrench sleeve 23. When the storage handle 4 and the supply mechanism 3 move upward and reset, the elastic limiting member 231 will also reset and fill the notch part of the wrench sleeve 23, and the limiting ring 232 will be sleeved outside the wrench sleeve 23 and the elastic limiting member 231 to tighten the connection between the two, so as to ensure that during the subsequent rotation of the wrench module 2 to tighten the nut 6, the situation that the notch of the wrench sleeve 23 will break away from the nut 6 is avoided.

[0026] It should be noted that in this article, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary tooling for assembling a hub of a wind turbine generator, comprising a motor module (1) and a nut (6), characterized in that, It further includes: A wrench module (2), which is installed on the motor module (1); A storage handle (4), which is located on the side of the wrench module (2); A feeding mechanism (3), which is movably sleeved at the bottom of the wrench module (2) for sequentially feeding nuts (6) in the storage handle (4) into the wrench module (2); 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 rotates with the transmission shaft (21) is arranged at the bottom of the transmission shaft (21), and a wrench sleeve (23) is fixedly connected to the bottom of the connecting ring (22). A notch and a magnet (233) are provided on the wrench sleeve (23); The feeding mechanism (3) includes a receiving box (31) for storing nuts (6) and a hollowed-out portion (311) opened thereon for sleeving at the bottom of the wrench module (2). A U-shaped member (32) for pushing the nuts (6) to move is arranged in the receiving box (31), and spring telescopic rods (33) are hinged at both ends of the U-shaped member (32). An annular shaft sleeve (34) is connected to the outside of the transmission shaft (21) by bearings, and the annular shaft sleeve (34) is hinged to the top ends of the spring telescopic rods (33); The storage handle (4) is installed on the receiving box (31). When the receiving box (31) moves downward, the spring telescopic rods (33) extend 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 enabling the nut (6) to be adsorbed by the magnet (233).

2. The auxiliary tooling for assembling the hub of a wind turbine generator set according to claim 1, wherein: The bottom end of the transmission shaft (21) penetrates through the connecting ring (22) and is in spline connection with the connecting ring (22). An elastic member (212) is fixedly connected 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) to move downward in the wrench sleeve (23).

3. The auxiliary tooling for the hub assembly of a wind turbine generator set according to claim 1, characterized in that: A guiding groove (211) is formed on the transmission shaft (21). A connecting frame (5) is also 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 slides in the guiding groove (211) is fixedly connected to the connecting frame (5); The top of the guiding groove (211) is a funnel-shaped groove covering the outside of the transmission shaft (21), and the bottom of the guiding 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 nut (6) delivery on the receiving box (31).

4. The auxiliary tooling for the hub assembly of the wind turbine generator set according to claim 1, wherein: An elastic limiting member (231) for blocking the notch of the wrench sleeve (23) is further arranged on the wrench sleeve (23). The elastic limiting member (231) has an upward trend on the wrench sleeve (23) under the action of its own elastic force; When the receiving box (31) moves downward, it squeezes the elastic limiting member (231) to move downward and is misaligned with the notch of the wrench sleeve (23).

5. The auxiliary tooling for assembling the hub of a wind turbine generator according to claim 4, characterized in that: A limiting ring (232) is fixedly connected to the top of the outer periphery of the elastic limiting member (231), 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) to move downward by squeezing the limiting ring (232).

6. The auxiliary tooling for assembling the hub of a wind turbine generator set according to claim 1, characterized in that: A retaining ring (221) with a diameter equal to that of the connecting ring (22) and the wrench sleeve (23) is also fixedly connected to the top of the connecting ring (22). In the initial state, the hollow portion (311) is sleeved outside the retaining ring (221).

7. The auxiliary tooling for assembling the hub of a wind turbine generator set according to claim 6, characterized in that: Elastic stoppers (312) are also symmetrically and fixedly connected to the middle of the receiving box (31). When the nut (6) moves horizontally in the receiving box (31), it squeezes the elastic stoppers (312) and stores energy in them. And when the nut (6) passes over the elastic stoppers (312), it will be subjected to the elastic force of the elastic stoppers (312) and move away from the U-shaped member (32).

8. The auxiliary tooling for assembling the hub of a wind turbine according to claim 3, characterized in that: The material storage handle (4) includes a material storage cylinder (41) fixedly installed on the receiving box (31) and used for storing nuts (6). An elastic sleeve (42) is sleeved outside the material storage cylinder (41), and the elastic sleeve (42) has an upward trend on the material storage cylinder (41). The connecting frame (5) is fixedly connected to the elastic sleeve (42).

9. The auxiliary tooling for assembling the hub of a wind turbine generator according to claim 8, wherein: A sleeve cover (43) is threadedly connected to the top of the material storage cylinder (41), and a rod (44) capable of inserting into the threaded hole of the nut (6) is fixedly connected to the sleeve cover (43). The rod (44) extends to the top of the receiving box (31) and there is a gap reserved at the bottom of the receiving box (31) for the nut (6) to pass through.

10. The auxiliary tooling for assembling a wind turbine hub according to claim 9, wherein: A spring combination gasket (45) is sleeved outside the rod (44), and the spring part of the spring combination gasket (45) is fixedly connected to the sleeve cover (43) and makes the gasket part of the spring combination gasket (45) have a downward trend.

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