Shafting combination tool and shafting assembly method

Abstract

A shafting combination tool and a shafting assembly method. The shafting combination tool comprises a tool body (1) and a guide sleeve assembly (2). The tool body comprises a support body (11), and a guide shaft (12) and a plurality of connecting assemblies (13) arranged on the support body. The plurality of connecting assemblies are distributed on the support body around the guide shaft at intervals, and are configured to connect to a first shaft structure (100). The guide sleeve assembly is configured to connect to a second shaft structure (200), and can be sleeved over an outer periphery of the guide shaft. The tool body further comprises a first driving mechanism (14) arranged on the support body, the first driving mechanism being detachably connected to the guide sleeve assembly and capable of driving the guide sleeve assembly to move axially relative to the guide shaft. The shafting assembly method adopts the shafting combination tool to assemble the first shaft structure and the second shaft structure. By means of the shafting combination tool and the shafting assembly method, a shafting structure can be assembled in a horizontal assembly manner, the installation steps are simple and efficient, and the assembly efficiency and reliability are improved.

Description

Shaft assembly tooling and shaft assembly method

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510024933.2, filed on January 7, 2025, entitled “Shaft System Assembly Tooling and Shaft System Assembly Method”, and Chinese Patent Application No. 202423122067.0, filed on December 17, 2024, entitled “An Assembly Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of wind power generation technology, and in particular to a shaft assembly tooling and shaft assembly method. Background Technology

[0004] The shaft system mainly consists of a main shaft, bearing housing, front bearing, and rear bearing. In a wind turbine generator set, wind power drives the blades to rotate, and the blade shafts are speed-changing through the shaft system, which drives the generator rotor to rotate, thereby generating electricity.

[0005] Existing bearing housings and spindles are mainly assembled using a vertical assembly method. This method utilizes the self-weight of the shaft system to install the bearing housing and spindle, but requires the shaft system to be flipped after installation. As units become increasingly larger, bearing housings are integrated with bases, and the dimensions of the shaft system and spindle are increasing. The difficulty of flipping the shaft system during production and the manufacturing safety risks are also increasing. Therefore, a new shaft system assembly method is needed. Summary of the Invention

[0006] This application provides a shaft system assembly tooling and shaft system assembly method, which can assemble shaft system structures using a horizontal assembly method. The installation steps are simple and efficient, improving assembly efficiency and reliability.

[0007] On one hand, according to an embodiment of this application, a shaft assembly tooling is proposed for mounting a first shaft structure and a second shaft structure. The shaft assembly tooling includes a tooling body and a guide cylinder assembly. The tooling body includes a support body, a guide shaft disposed on the support body, and a connecting assembly. Multiple connecting assemblies are spaced apart around the guide shaft on the support body. The connecting assemblies are used to connect the first shaft structure, and the guide cylinder assembly is used to connect to the second shaft structure. The guide cylinder assembly can be sleeved on the outer periphery of the guide shaft. The tooling body also includes a first driving mechanism, which is disposed on the support body. The first driving mechanism is detachably connected to the guide cylinder assembly and drives the guide cylinder assembly to move axially relative to the guide shaft.

[0008] According to one aspect of the embodiments of this application, the guide cylinder assembly is provided with a locking hole, and the first driving mechanism includes a first driving component and a locking member. The locking member is disposed at the output end of the first driving component and is configured to be able to be engaged in the locking hole and drive the guide cylinder assembly to reciprocate axially under the action of the first driving component, so that the second shaft structure is mounted on the first shaft structure.

[0009] According to one aspect of the embodiments of this application, the guide cylinder assembly has rotational freedom about the axial direction, the locking hole includes an arc-shaped segment and an inlet segment connected to one end of the arc-shaped segment, the arc-shaped segment extends circumferentially along the guide shaft, the diameter of the inlet segment is larger than the diameter of the arc-shaped segment, and the locking member is configured to extend into the locking hole from the inlet segment and engage with the arc-shaped segment.

[0010] According to one aspect of the embodiments of this application, the locking hole includes a first end and a second end disposed along the axial direction, the first end being located on the side away from the guide shaft, the opening area of ​​the first end being larger than the opening area of ​​the second end, and the locking member being configured to adapt to the locking hole and abut against the hole wall of the locking hole.

[0011] According to one aspect of the embodiments of this application, the shaft assembly tooling further includes a guide seat assembly for connection to the first shaft structure. The guide seat assembly is provided with a plurality of connecting parts, which are adapted to a connecting component. The connecting component is connected to the first shaft structure through the guide seat assembly.

[0012] According to one aspect of the embodiments of this application, the guide seat assembly includes a guide seat disposed along the axial direction and a first connecting flange. The guide seat is provided with a connecting portion, and the first connecting flange is detachably connected to the side of the guide seat opposite to the connecting portion. The guide seat is connected to a first shaft structure through the first connecting flange.

[0013] According to one aspect of the embodiments of this application, the guide cylinder assembly includes a guide cylinder and a second connecting flange, the second connecting flange being detachably connected to the guide cylinder, and the guide cylinder being connected to a second shaft structure through the second connecting flange.

[0014] According to one aspect of the present application, the guide cylinder includes a guide cylinder body and a guide portion disposed on the guide cylinder body. The guide cylinder body is connected to a second connecting flange. The guide portion protrudes radially toward the guide shaft relative to the guide cylinder body and is sleeved on the outer periphery of the guide shaft.

[0015] According to one aspect of an embodiment of this application, the guide shaft includes a first shaft segment and a second shaft segment arranged axially. The first shaft segment is connected to a support body via the second shaft segment, and the diameter of the second shaft segment is adapted to the inner diameter of the guide cylinder assembly. Specifically, the diameter of the first shaft segment is smaller than the diameter of the second shaft segment, and the diameter of the first shaft segment gradually increases along the direction approaching the second shaft segment.

[0016] According to one aspect of the embodiments of this application, the tooling body further includes a connecting ring, which is coaxially disposed on the support body with the guide shaft and is used to connect the bearing inner ring. The connecting ring has a heating module for heating the bearing inner ring.

[0017] According to one aspect of the embodiments of this application, the connecting ring is used to be embedded in the inner circumferential side of the bearing inner ring. The tooling body further includes a second driving mechanism. The second driving mechanism includes a second driving component and an abutment member disposed at the output end of the second driving component. The abutment member is configured to abut against the axial end face of the bearing inner ring. The second driving component is used to drive the abutment member to move axially so that the bearing inner ring is disengaged from the connecting ring and fitted between the first shaft structure and the second shaft structure.

[0018] According to one aspect of the embodiments of this application, the heating module includes a heating layer disposed on the outer periphery of the connecting ring.

[0019] According to one aspect of the embodiments of this application, the support body includes a first support unit and a second support unit arranged axially. The first support unit includes a central portion and two or more extensions, each extension being located in the same plane and extending radially relative to the central portion. A guide shaft is disposed in the central portion, and a connecting assembly is disposed in the extension. A second drive assembly is disposed in the second support unit, which is axially disposed on the side of the first support unit opposite to the guide shaft. The abutment includes multiple abutment portions, each abutment portion passing through the gap between two adjacent extensions axially and used to abut against the axial end face of the inner ring of the rear bearing.

[0020] According to one aspect of the embodiments of this application, the shaft assembly tooling further includes a base, a support body is supported on the base, the base is provided with a rotating groove, the support body is provided with a rotating shaft, the rotating shaft is rotatably engaged with the rotating groove, and the extension direction of the rotating shaft intersects the axial direction.

[0021] On the other hand, according to an embodiment of this application, a shaft assembly method is proposed, including the following steps: a preparation step, providing a shaft assembly tooling as described in the above embodiment, and setting the axial direction of the shaft assembly tooling horizontally; a pre-installation step, connecting a first shaft structure to a connecting component of the tooling body, and connecting a second shaft structure to a guide cylinder assembly; an assembly step, inserting the second shaft structure into the first shaft structure, sleeved the guide cylinder assembly on the guide shaft, connecting a first drive mechanism to the guide cylinder assembly, and driving the guide cylinder assembly to move axially relative to the guide shaft through the first drive mechanism until the second shaft structure is installed on the first shaft structure.

[0022] According to one aspect of the embodiments of this application, the tooling body further includes a connecting ring disposed on the support body, the connecting ring having a heating module; the pre-installation step further includes: connecting the bearing inner ring to the connecting ring; the assembly step further includes: heating the bearing inner ring through the heating module, and assembling the bearing inner ring between the first shaft structure and the second shaft structure.

[0023] The shaft assembly tooling provided in this application includes a tooling body and a guide cylinder assembly. The tooling body is provided with a connecting component for connecting a first shaft structure, and the guide cylinder assembly is used to connect a second shaft structure. During horizontal assembly, the first and second shaft structures are axially aligned horizontally. As the second shaft structure moves axially relative to the first shaft structure, the guide cylinder assembly can be guided by the guide shaft of the tooling body to ensure the coaxial alignment of the first and second shaft structures. Furthermore, after the second shaft structure moves axially relative to the first shaft structure to a predetermined position, the first drive mechanism of the tooling body can connect with the guide cylinder assembly and drive the guide cylinder assembly to move axially relative to the guide shaft, so that the second shaft structure is mounted on the first shaft structure, achieving horizontal assembly of the shaft structure without the need to flip the shaft structure, reducing assembly difficulty and improving assembly efficiency. Attached Figure Description

[0024] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0025] Figure 1 is a schematic diagram of the structure of the tooling body provided in one embodiment of this application;

[0026] Figure 2 is a schematic diagram of the structure of the guide tube assembly connected to the second shaft assembly according to an embodiment of this application;

[0027] Figure 3 is a cross-sectional view of the shaft system assembly tooling provided in one embodiment of this application;

[0028] Figure 4 is a schematic diagram of the structure of the guide seat assembly connected to the first shaft assembly according to an embodiment of this application;

[0029] Figure 5 is a cross-sectional view of a guide tube assembly provided in one embodiment of this application;

[0030] Figure 6 is a schematic diagram of the structure of the rear bearing inner ring installed on the tooling body according to an embodiment of this application;

[0031] Figure 7 is a schematic diagram of the assembly structure of the shaft system assembly tooling provided in one embodiment of this application;

[0032] Figure 8 is a schematic diagram of the structure of the rear bearing inner ring installed on the tooling body according to one embodiment of this application;

[0033] Figure 9 is a schematic diagram of the shaft system assembly provided in one embodiment of this application;

[0034] Figure 10 is a cross-sectional view of a shaft system assembly provided in one embodiment of this application;

[0035] Figure 11 is a schematic diagram of the shaft system assembly according to one embodiment of this application;

[0036] Figure 12 is a schematic diagram of the assembly device provided in some embodiments of this application;

[0037] Figure 13 is a schematic diagram of the structure of the hoisting body equipped with a turning mechanism in the assembly device provided in some embodiments of this application;

[0038] Figure 14 is a structural schematic diagram of the shaft installed in the hoisting body in a vertical state according to some embodiments of this application;

[0039] Figure 15 is a schematic diagram of the horizontal state of the shaft installed in the hoisting body according to some embodiments of this application;

[0040] Figure 16 is a schematic diagram of the structure of the limiting mechanism connected to the bearing seat in the assembly device provided in some embodiments of this application;

[0041] Figure 17 is a front view of the horizontal state of the shaft installed in the hoisting body according to some embodiments of this application;

[0042] Figure 18 is a schematic diagram of the internal structure of the auxiliary mechanism in the assembly device provided in some embodiments of this application.

[0043] In the attached image:

[0044] 100 - First shaft structure; 200 - Second shaft structure; 300 - Rear bearing inner ring;

[0045] 1-Tooling body; 11-Supporting body; 111-First support unit; 112-Second support unit; 113-Rotating shaft; 12-Guide shaft; 121-First shaft segment; 122-Second shaft segment; 13-Connecting assembly; 14-First drive mechanism; 141-Locking component; 1411-Head; 1412-Rod; 142-First drive assembly; 15-Connecting ring; 151-Heating module; 16-Second drive mechanism; 161-Abutting component; 162-Second drive assembly; 17-Base;

[0046] 2-Guide cylinder assembly; 21-Guide cylinder; 211-Guide cylinder body; 212-Guide section; 213-Bearing; 214-Pull component; 22-Second connecting flange;

[0047] 3-Guide seat assembly; 31-Connecting part;

[0048] 4. Lifting main body; 41. Bearing beam; 411. Rotating sleeve; 4111. Release outlet; 42. Lifting beam; 421. Lifting structure;

[0049] 5. Turning mechanism; 51. First drive unit; 52. Rotary structure; 521. Positioning structure;

[0050] 6. Limiting mechanism; 61. Support arm; 62. Connecting component;

[0051] 7. Flip-top base; 71. Rotating shaft;

[0052] 8. Adjustment assembly; 81. Sliding sleeve; 82. Second drive;

[0053] 9. Supporting platform;

[0054] K1 - Locking hole; K11 - Arc-shaped section; K12 - Entrance section;

[0055] X-axis.

[0056] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0057] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0058] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the shaft system assembly tooling and shaft system assembly method of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0059] For some types of wind turbine generator sets, such as direct-drive permanent magnet turbines or medium-speed permanent magnet semi-direct-drive turbines, a shaft system is included. The input end of the shaft system is connected to the rotor, and the output end is connected to the generator. When wind power acts on the rotor, it drives the rotor to rotate. The shaft system is used to increase the rotor speed to the generator's rated speed to enable the generator to generate electricity normally, thus realizing the conversion of wind energy into electrical energy.

[0060] The shaft system mainly includes a bearing housing, a main shaft housed within the bearing housing, a front bearing, and a rear bearing. The assembly of this shaft system in related technologies generally employs a vertical assembly method, where the bearing housing and main shaft are assembled along the direction of gravity. The specific process includes: setting the main shaft and bearing housing in a vertical position; connecting the inner ring of the front bearing to the main shaft; and connecting the outer rings of the front and rear bearings to the bearing housing; using the weight of the bearing housing itself to vertically mount the main shaft and bearing housing; then heating the inner ring of the rear bearing and lowering it under its own weight to assemble it between the outer ring of the rear bearing and the main shaft, completing the assembly of the shaft system. After assembly, the assembled shaft system is flipped to a horizontal position before proceeding to subsequent steps.

[0061] However, since the bearing housing and main shaft are initially horizontal, vertical assembly requires flipping these components to achieve a vertical position. Furthermore, the shaft system must be flipped back to a horizontal position after installation. As wind turbines become increasingly larger, the bearing housing and base are integrated, and the dimensions of the bearing housing and main shaft increase. This increases the difficulty of flipping and assembling the bearing housing and main shaft, raises manufacturing safety risks, requires more tooling, and limits the types of shaft systems that can be assembled due to limited space on the production site.

[0062] Based on the above-mentioned deficiencies, this application provides a shaft system assembly tooling and shaft system assembly method. The shaft system assembly tooling and shaft system assembly method in this application will be described in detail below with reference to Figures 1 to 11.

[0063] Please refer to Figures 1 to 3 together. Figure 1 shows a structural schematic diagram of the tooling body 1 provided in some embodiments of this application. Figure 2 shows a structural schematic diagram of the guide cylinder assembly 2 connected to the second shaft assembly provided in some embodiments of this application. Figure 3 shows a cross-sectional view of the shaft system assembly tooling provided in some embodiments of this application.

[0064] This application provides a shaft assembly tooling for fitting a first shaft structure 100 and a second shaft structure 200. The shaft assembly tooling includes a tooling body 1 and a guide cylinder assembly 2. The tooling body 1 includes a support body 11, a guide shaft 12 disposed on the support body 11, and connecting assemblies 13. Multiple connecting assemblies 13 are spaced apart around the guide shaft 12 on the support body 11. The connecting assemblies 13 connect the first shaft structure 100, and the guide cylinder assembly 2 connects to the second shaft structure 200. The guide cylinder assembly 2 can be sleeved on the outer periphery of the guide shaft 12. The tooling body 1 also includes a first drive mechanism 14, which is disposed on the support body 11. The first drive mechanism 14 is detachably connected to the guide cylinder assembly 2 and drives the guide cylinder assembly 2 to move axially (X) relative to the guide shaft 12.

[0065] It is understandable that if the first shaft structure 100 and the second shaft structure 200 are horizontally assembled, there is a problem of horizontal alignment between the first shaft structure 100 and the second shaft structure 200. On the other hand, it is also necessary to solve the problem that the shaft structure cannot rely on its own gravity to fix the two during horizontal assembly, making the assembly difficult.

[0066] The shaft assembly tooling in this embodiment includes a tooling body 1 and a guide cylinder assembly 2. The tooling body 1 is provided with a connecting component 13 for connecting a first shaft structure 100, and the guide cylinder assembly 2 is used to connect a second shaft structure 200. During horizontal assembly, the first shaft structure 100 and the second shaft structure 200 are arranged in the horizontal direction along the axial X. When the second shaft structure 200 moves relative to the first shaft structure 100 along the axial X, the guide cylinder assembly 2 can be guided by the guide shaft 12 of the tooling body 1 to ensure that the first shaft structure 100 and the second shaft structure 200 are coaxially arranged. Furthermore, after the second shaft structure 200 moves relative to the first shaft structure 100 along the axial X to a predetermined position, the first drive mechanism 14 of the tooling body 1 can connect with the guide cylinder assembly 2 and drive the guide cylinder assembly 2 to move relative to the guide shaft 12 along the axial X, so that the second shaft structure 200 is mounted on the first shaft structure 100, realizing the horizontal assembly of the shaft structure, thereby eliminating the need to flip the shaft structure, reducing assembly difficulty, and improving assembly efficiency.

[0067] It should be noted that when assembling the shaft system using the shaft assembly tooling in this embodiment, the first shaft structure 100 is an outer shaft with a hollow interior, and the second shaft structure 200 is an inner shaft. Since the tooling body 1 includes a guide shaft 12 and connecting components 13 spaced around the guide shaft 12, after the first shaft structure 100 is fixed by the connecting components 13, the guide shaft 12 can be located inside the hollow structure of the first shaft structure 100, so that it can be aligned with the guide tube assembly installed on the second shaft structure 200, thereby achieving the assembly and positioning of the shaft system.

[0068] As an optional implementation, when the shaft system structure includes a bearing housing, a spindle, a front bearing, and a rear bearing, the first shaft structure 100 is the bearing housing, and the second shaft structure 200 is the spindle. That is, the connecting component 13 of the tooling body 1 is used to connect the bearing housing, and the guide cylinder component 2 is used to connect the spindle. In this way, the horizontal assembly of the bearing housing and the spindle can be achieved through the shaft system assembly tooling, reducing the assembly difficulty.

[0069] For ease of description, the following explanation will use the first shaft structure 100 as the bearing housing and the second shaft structure 200 as the main shaft as an example.

[0070] For the tooling body 1, it is used to connect to the bearing housing through the connecting component 13. The connecting component 13 can adopt, but is not limited to, electromagnetic locking or other mechanical locking methods, as long as it can meet the connection and fixing requirements between the tooling body 1 and the bearing housing.

[0071] The connecting components 13 are multiple and arranged around the guide shaft 12 to connect and fasten the bearing housing through multiple connection points. The multiple connecting components 13 can be centrally symmetrically distributed relative to the guide shaft 12, that is, the angle between the lines connecting any two adjacent connecting components 13 and the guide shaft 12 can be a certain value. For example, when three connecting components 13 are provided, the angle between the lines connecting two adjacent connecting components 13 can be set to 120°, and when four connecting components 13 are provided, the angle between the lines connecting two adjacent connecting components 13 can be set to 90°, so as to improve the reliability of fixing the tooling body 1 to the bearing housing.

[0072] The guide cylinder assembly 2 is used to connect to the end of the main shaft and align with the guide shaft 12. Specifically, the guide cylinder assembly 2 can be connected to the end of the main shaft by means of bolts or other means, so that after the main shaft is installed in the bearing housing, the guide cylinder assembly 2 can be removed and reused.

[0073] In addition, the guide cylinder assembly 2 is also configured to be detachably connected to the first drive mechanism 14. The first drive mechanism 14 may adopt, but is not limited to, electromagnetic locking or other mechanical locking methods. Among them, the mechanical locking methods may be threaded locking, clamping locking, etc., which can meet the requirement that when the spindle moves to the preset position relative to the bearing seat, the first drive mechanism 14 can be connected and fixed to the guide cylinder assembly 2 and can drive the guide cylinder assembly 2 to reciprocate along the axial direction X.

[0074] Please refer to Figures 1 to 3. To facilitate the connection and fixation of the guide cylinder assembly 2 and the first drive mechanism 14, in some optional embodiments, the guide cylinder assembly 2 is provided with a locking hole K1. The first drive mechanism 14 includes a first drive assembly 142 and a locking member 141. The locking member 141 is disposed at the output end of the first drive assembly 142. The locking member 141 is configured to be able to be engaged in the locking hole K1 and drive the guide cylinder assembly 2 to reciprocate along the axial direction X under the action of the first drive assembly 142, so that the second shaft structure 200 is mounted on the first shaft structure 100.

[0075] By providing a locking hole K1 on the guide cylinder assembly 2 and a locking member 141 adapted to the locking hole K1 on the first drive mechanism 14, the locking member 141 can be inserted into the locking hole K1 and locked in place when the main shaft moves relative to the bearing seat along the axial direction X to a preset position. Thus, the locking member 141 can be driven to move along the axial direction X by the first drive assembly 142, thereby driving the guide cylinder assembly 2 and the main shaft to move along the axial direction X and installing the main shaft in the bearing seat.

[0076] Optionally, the first drive component 142 can be configured as a linear drive mechanism, such as a hydraulic transmission mechanism, a pneumatic transmission mechanism, a linear motor drive mechanism, etc., to drive the locking member 141 to move along the axial direction X.

[0077] Optionally, the locking member 141 can be secured in the locking hole K1 in various ways. For example, in some embodiments, the locking member 141 may be provided with an elastic part. During the process of inserting the locking member 141 into the locking hole K1, the elastic part undergoes elastic deformation. When the locking member 141 is inserted into place, the elastic part can restore its deformation and abut against the side of the locking hole K1 away from the tooling body 1, thereby realizing the locking member 141 and the locking hole K1 can be locked together.

[0078] Please refer to Figures 1 to 4. In some embodiments, the guide cylinder assembly 2 has a rotational degree of freedom about the axial direction X. The locking hole K1 includes an arc-shaped segment K11 and an inlet segment K12 connected to one end of the arc-shaped segment K11. The arc-shaped segment K11 extends circumferentially along the guide shaft 12. The diameter of the inlet segment K12 is larger than the diameter of the arc-shaped segment K11. The locking member 141 is configured to extend into the locking hole K1 from the inlet segment K12 and engage with the arc-shaped segment K11.

[0079] It should be noted that the diameter of the inlet section K12 of the locking hole K1 and the diameter of the arc-shaped section K11 refer to the diameter of the opening of the locking hole K1 along the axial direction X towards the tooling body 1. When the inlet section K12 is a circular hole, the diameter of the inlet section K12 is the diameter of the circular hole. When the inlet section K12 is an irregularly shaped hole, the diameter of the inlet section K12 is the equivalent width. The diameter of the arc-shaped section K11 refers to the minimum width of the arc-shaped section K11 in its cross-section along its extension direction.

[0080] By setting the locking hole K1 to an arc-shaped section K11 and an inlet section K12, when the main shaft moves to a preset position along the axial direction X relative to the bearing seat, the locking member 141 can be aligned with the inlet section K12 and extend into the locking hole K1 through the inlet section K12. Then, by controlling the rotation of the main shaft and / or the guide cylinder assembly 2 relative to the bearing seat, the locking member 141 can be aligned with the arc-shaped section K11, so that the locking member 141 can be locked by the arc-shaped section K11, thereby realizing the connection between the first drive mechanism 14 and the guide cylinder assembly 2.

[0081] Compared to using methods such as elastic deformation to secure the locking hole K1 and the locking element 141, setting the locking hole K1 to the form of an arc-shaped segment K11 and an inlet segment K12 simplifies the structure of the locking element 141 and improves the reliability of the securing mechanism. Furthermore, it facilitates the disassembly of the guide cylinder assembly 2 and the tooling body 1 after the spindle is mounted on the bearing housing, improving assembly efficiency and reducing assembly difficulty.

[0082] Optionally, the first drive mechanism 14 can be configured as a locking tension cylinder, the first drive assembly 142 is a hydraulic cylinder of the locking tension cylinder, and the locking member 141 is a piston set at the output end of the hydraulic cylinder, so as to simplify the structure of the first drive mechanism 14.

[0083] Optionally, there can be multiple locking holes K1, and the number of locking members 141 is less than or equal to the number of locking holes K1. Each locking member 141 is configured to be inserted into one of the locking holes K1 and locked in place. Further optionally, the multiple locking holes K1 can be centrally symmetrically distributed relative to the guide shaft 12, and the number of locking members 141 is equal to the number of locking holes K1. Each locking member 141 corresponds to one locking hole K1 and is locked in place with the locking hole K1.

[0084] As an optional implementation, the number of locking holes K1 can be set to four, each locking hole K1 including an arc-shaped segment K11 and an entrance segment K12, with the entrance segment K12 of each locking hole K1 located at the same end of the arc-shaped segment K11 along the circumferential direction. The number of locking members 141 is also set to four, and they are arranged one-to-one with the locking holes K1. When the main shaft moves to a preset position along the axial direction X relative to the bearing seat, each locking member 141 is inserted into the entrance segment K12 of the corresponding locking hole K1. After the guide cylinder assembly 2 rotates, each locking hole K1 on the guide cylinder assembly 2 rotates until its arc-shaped segment K11 is aligned with the locking member 141, so that the first drive mechanism 14 and the guide cylinder assembly 2 can be detachably connected through the cooperation of multiple sets of locking members 141 and locking holes K1.

[0085] It is understood that when multiple locking components 141 are provided, the multiple locking components 141 can share the same first driving component 142, and each locking component 141 can also be provided with a corresponding first driving component 142. The setting position and driving method of the locking components 141 and the first driving component 142 can be adjusted according to the specific structure of the tooling body 1, and this application does not make specific limitations in this regard.

[0086] Please refer to Figures 1 to 3. In some alternative embodiments, the locking hole K1 includes a first end and a second end disposed along the axial direction X. The first end is located on the side away from the guide shaft 12, and the opening area of ​​the first end is larger than the opening area of ​​the second end. The locking member 141 is configured to fit into the locking hole K1 and abut against the hole wall of the locking hole K1.

[0087] By making the opening area of ​​the first end larger than the opening area of ​​the second end, a stepped structure can be formed in the locking hole K1 or the sidewall of the locking hole K1 can be inclined. The locking member 141 is configured to fit the locking hole K1. Thus, when the locking member 141 is locked in the locking hole K1, the contact area between the locking member 141 and the locking hole K1 can be increased. As a result, when the locking member 141 is driven to move along the axial X by the first driving assembly 142, it is easier to drive the guide cylinder assembly 2 to move along the axial X by the locking member 141, thereby improving the reliability of the assembly.

[0088] As an optional implementation, the locking hole K1 may include a first hole segment and a second hole segment connected along the axial direction X, with the first hole segment located at a first end and the second hole segment located at a second end. The first hole segment may be at least partially configured as an inverted trapezoidal structure, i.e., the first hole segment gradually tapers towards the second hole segment. Correspondingly, the locking member 141 includes a rod portion 1412 and a head 1411 disposed at one end of the rod portion 1412. The head 1411 of the locking member 141 may have an inverted trapezoidal structure, and the rod portion 1412 may be configured as a cylindrical rod. The head 1411 of the locking member 141 is adapted to the first hole segment, and the rod portion 1412 of the locking member 141 is adapted to the second hole segment. By adopting the above structure, when the locking member 141 is driven to move along the axial direction X by the first driving assembly 142, the head 1411 of the locking member 141 can abut against the side wall of the first hole segment and drive the guide cylinder assembly 2 to move along the axial direction X, thereby improving the reliability of the assembly.

[0089] Please refer to Figures 1 to 4. Figure 4 shows a schematic diagram of the structure of the guide seat assembly 3 connected to the first shaft assembly according to some embodiments of this application.

[0090] It is understandable that for shaft assembly tooling, the bearing housing can be directly locked using the connecting component 13 through methods such as electromagnetic locking. Alternatively, the bearing housing can be connected and fixed to the tooling body 1 by setting up the guide seat component 3, that is, by using the guide seat component 3 as a transition component.

[0091] In some alternative embodiments, the shaft assembly tooling further includes a guide seat assembly 3, which is used to connect to the first shaft structure 100. The guide seat assembly 3 is provided with a plurality of connecting parts 31, which are adapted to the connecting assembly 13. The connecting assembly 13 is connected to the first shaft structure 100 through the guide seat assembly 3.

[0092] When the shaft assembly tooling also includes a guide seat assembly 3, the guide seat assembly 3 can be configured as a ring structure, which is used for detachable connection with the end of the bearing housing. The guide seat assembly 3 can be provided with multiple connecting parts 31, and the connecting assembly 13 is connected to the connecting parts 31 to realize the connection and fixation of the bearing housing and the tooling body 1.

[0093] As an optional implementation, the connecting assembly 13 can be configured as a connecting cylinder, and the connecting portion 31 on the guide seat assembly 3 can be configured as a locking sleeve adapted to the piston rod of the connecting cylinder. The connecting cylinder is used to drive the piston rod to move along the axial direction X, and the piston rod can be interference-fitted with the locking sleeve to lock the connecting assembly 13 and the guide seat assembly 3, thereby realizing the automatic assembly of the tooling body 1 and the bearing seat.

[0094] When the bearing housing is connected to the tooling body 1 via the guide seat assembly 3, in some optional embodiments, the guide seat assembly 3 includes a guide seat arranged along the axial direction X and a first connecting flange. The guide seat is provided with a connecting part 31, and the first connecting flange is detachably connected to the side of the guide seat away from the connecting part 31. The guide seat is connected to the first shaft structure 100 via the first connecting flange.

[0095] By setting the guide seat assembly 3 as a guide seat and a first connecting flange, the bearing seats of various different models can be connected through the first connecting flange, thus making it applicable to the assembly of various shaft system structures of different specifications. This avoids the problem of stagnation in the assembly tooling after the model update and iteration of wind turbine generator sets, and improves the applicability of the shaft system assembly tooling.

[0096] Please refer to Figures 1 to 5. Figure 5 shows a cross-sectional view of the guide cylinder assembly 2 provided in some embodiments of this application.

[0097] Similar to the guide seat assembly 3, in some alternative embodiments, the guide cylinder assembly 2 includes a guide cylinder 21 and a second connecting flange 22, the second connecting flange 22 being detachably connected to the guide cylinder 21, and the guide cylinder 21 being connected to the second shaft structure 200 via the second connecting flange 22.

[0098] By setting the guide tube assembly 2 as the guide tube 21 and the second connecting flange 22, the main shafts of various different models can be connected through the second connecting flange 22, thus making it applicable to the assembly of various shaft system structures of different specifications. This avoids the problem of stagnation in the assembly tooling after the model update and iteration of the wind turbine generator set, and improves the applicability of the shaft system assembly tooling.

[0099] Therefore, by setting the guide seat assembly 3 as a guide seat and the first connecting flange, and the guide cylinder assembly 2 as a guide cylinder 21 and the second connecting flange 22, the assembly of shaft system structures of various models can be realized through shaft system assembly tooling, effectively solving the problem of frequent replacement of shaft system assembly tooling and reducing the number of shaft system assembly tooling.

[0100] Furthermore, the guide cylinder 21 includes a guide portion 212 along the guide cylinder body 211 and disposed on the guide cylinder body 211. The guide cylinder body 211 is connected to the second connecting flange 22. The guide portion 212 protrudes radially toward the guide shaft 12 relative to the guide cylinder body 211 and is sleeved on the outer periphery of the guide shaft 12.

[0101] When the guide cylinder 21 is configured as a guide cylinder body 211 and a guide portion 212 disposed on the guide cylinder body 211, the guide cylinder body 211 is used to connect with the second connecting flange 22, and a locking hole K1 is provided on the guide cylinder body 211 for connection with the first drive mechanism 14. The guide portion 212 protrudes radially relative to the guide cylinder body 211 and is used to cooperate with the guide shaft 12 to achieve horizontal assembly and alignment of the main shaft and bearing seat.

[0102] By separating the guide cylinder 21 into a guide cylinder body 211 and a guide part 212, the guide part 212 can be machined separately to ensure the surface accuracy of the guide part 212, thereby improving the fitting accuracy between the guide part 212 and the guide shaft 12 of the guide cylinder assembly 2 and improving the centering effect when the spindle and bearing seat are horizontally assembled.

[0103] In some optional embodiments, the guide shaft 12 includes a first shaft segment 121 and a second shaft segment 122 disposed along the axial direction X. The first shaft segment 121 is connected to the support body 11 through the second shaft segment 122, and the diameter of the second shaft segment 122 is adapted to the inner diameter of the guide cylinder assembly 2. Specifically, the diameter of the first shaft segment 121 is smaller than the diameter of the second shaft segment 122, and the diameter of the first shaft segment 121 gradually increases along the direction close to the second shaft segment 122.

[0104] During the process of installing the spindle onto the bearing housing, the guide cylinder body 211 is first fitted onto the outer periphery of the first shaft section 121. Since the diameter of the first shaft section 121 gradually increases along the direction close to the second shaft section 122, the horizontal assembly and alignment of the guide cylinder assembly 2 can be gradually achieved through the first shaft section 121. Then, the guide cylinder assembly 2 is fitted onto the second shaft section 122 to improve assembly efficiency.

[0105] It is understood that the spindle includes a front end and a rear end arranged along the axial direction X. The guide cylinder assembly 2 is connected to the rear end of the spindle, and the lifting fixture and / or crane are connected to the front end of the spindle. During the process of installing the spindle into the bearing housing, the rear end of the spindle is first inserted into the bearing housing by the front end, and then moved relative to the bearing housing along the axial direction X. Since the lifting fixture and / or crane are connected to the front end of the spindle, the rear end of the spindle may be offset by a certain distance under its own weight when the spindle is horizontally assembled. However, the shaft assembly fixture in this embodiment of the application, by making the guide shaft 12 include a first shaft segment 121 and a second shaft segment 122, can gradually guide the guide cylinder assembly 2 through the first shaft segment 121 when the rear end of the spindle is offset, thereby improving the coaxiality of the spindle and the bearing housing during horizontal assembly.

[0106] Optionally, in the axial direction X, the protrusion distance of the second shaft segment 122 relative to the connecting end of the connecting assembly 13 used to connect the bearing seat can be greater than or equal to the protrusion distance of the locking member 141 relative to the connecting end. This allows the locking member 141 to extend into the locking hole K1 of the guide cylinder assembly 2 only after the guide cylinder assembly 2 moves along the axial direction X to the point where the first shaft segment 121 is sleeved on the second shaft segment 122. This allows the guide cylinder assembly 2 to cooperate with the second shaft segment 122 when the first drive mechanism 14 drives the guide cylinder assembly 2 to move along the axial direction X, thereby reducing the risk of jamming or eccentricity and improving assembly reliability.

[0107] Optionally, the guide shaft 12 may include a shaft body arranged circumferentially, or the guide shaft 12 may include multiple sub-shaft bodies arranged at intervals along the circumferential direction. For example, the guide shaft 12 may include three sub-shaft bodies arranged at intervals along the circumferential direction, each sub-shaft body including a first shaft segment 121 and a second shaft segment 122. By setting the guide shaft 12 as multiple sub-shaft bodies, the manufacturing difficulty can be simplified and reduced, so as to better ensure the manufacturing accuracy of the guide shaft 12 and improve the coaxiality when the spindle and bearing housing are horizontally assembled.

[0108] Understandably, during the actual assembly process, when the spindle is installed in the bearing housing, the inner ring of the front bearing is connected to the spindle, and the outer ring of the front bearing and the outer ring of the rear bearing are connected to the bearing housing. After the spindle is installed in the bearing housing, the inner ring of the rear bearing 300 needs to be heated before it is assembled between the outer ring of the rear bearing and the spindle.

[0109] Since the rear bearing inner ring 300 extends vertically along its axial direction (X) when heated, it can be directly assembled between the spindle and bearing housing's outer ring using its own weight when the spindle and bearing housing are assembled vertically. However, when the spindle and bearing housing are assembled horizontally, the rear bearing inner ring 300 needs to be heated and then rotated to a horizontal position so that its axial direction (X) extends horizontally before being assembled between the spindle and bearing housing's outer ring.

[0110] Assembling the heated rear bearing inner ring 300 requires extremely precise operation time. If the operation time is too long, there is a risk of jamming when the heated inner ring 300 is fitted between the spindle and the bearing housing. Horizontal assembly requires flipping the inner ring 300, adding a flipping step and increasing operation time. Furthermore, horizontal assembly cannot rely on the inner ring 300's own weight for installation. Therefore, higher demands are placed on the assembly quality and efficiency of the rear bearing inner ring 300.

[0111] To overcome the difficulty of horizontally assembling the rear bearing inner ring 300 between the spindle and the bearing housing, the embodiments of this application further improve the structure of the shaft assembly tooling. Please refer to Figures 1 to 7 together. Figure 6 shows a schematic diagram of the structure of the rear bearing inner ring 300 installed on the tooling body 1 according to some embodiments of this application, and Figure 7 shows a schematic diagram of the structure of the shaft assembly tooling in the embodiments of this application.

[0112] In some optional embodiments, the tooling body 1 further includes a connecting ring 15, which is coaxially disposed on the support body 11 with the guide shaft 12 and is used to connect the bearing inner ring. The connecting ring 15 has a heating module 151, which is used to heat the bearing inner ring.

[0113] The shaft assembly tooling in this embodiment of the application includes a connecting ring 15 on the tooling body 1. Therefore, in addition to assembling the spindle and bearing housing, the shaft assembly tooling can also assemble the rear bearing inner ring 300 between the spindle and bearing housing via the connecting ring 15. Furthermore, since the connecting ring 15 is coaxially arranged with the guide shaft 12 and is equipped with a heating module 151, the connecting ring 15 can be directly installed between the spindle and bearing housing after heating without needing to be flipped, reducing the risk of assembly jamming due to long operation time and improving assembly efficiency and effect.

[0114] It is understood that the connecting ring 15 is used to connect with the inner ring 300 of the rear bearing. The connecting ring 15 can be used to connect the axial end face of the inner ring 300 of the rear bearing, or it can be used to connect the inner and outer circumferential surfaces of the inner ring 300 of the rear bearing. The heating module 151 is disposed on the connecting surface between the connecting ring 15 and the inner ring 300 of the rear bearing.

[0115] In some embodiments, when the connecting ring 15 is connected to the axial end face of the rear bearing inner ring 300, the rear bearing inner ring 300 can be aligned with the rear bearing outer ring within the bearing housing when the bearing housing is connected to the tooling body 1. Then, the first drive mechanism 14 overcomes the negative pressure and connects the spindle to the rear bearing inner ring 300, thereby assembling the rear bearing inner ring 300 between the spindle and the bearing housing. In other embodiments, when the connecting ring 15 is connected to the inner and outer circumferential surfaces of the rear bearing inner ring 300, an abutment member 161 is required. After the spindle is installed in the bearing housing, the abutment member 161 overcomes the negative pressure and assembles the rear bearing inner ring 300 between the spindle and the bearing housing.

[0116] As an optional implementation, the connecting ring 15 is used to be embedded in the inner circumferential side of the bearing inner ring. The tooling body 1 also includes a second drive mechanism 16. The second drive mechanism 16 includes a second drive assembly 162 and an abutment 161 disposed at the output end of the second drive assembly 162. The abutment 161 is configured to abut against the axial end face of the rear bearing inner ring 300. The second drive assembly 162 is used to drive the abutment 161 to move along the axial direction X, so that the rear bearing inner ring 300 disengages from the connecting ring 15 and is fitted between the first shaft structure 100 and the second shaft structure 200.

[0117] When the connecting ring 15 is connected to the inner circumferential surface of the rear bearing inner ring 300, the heating module 151 can heat the inner circumferential surface of the rear bearing inner ring 300, resulting in better heating effect. Simultaneously, the tooling body 1 may also include a second drive mechanism 16, which includes an abutment member 161 and a second drive assembly 162. The abutment member 161 abuts against the axial end face of the rear bearing inner ring 300, and the second drive assembly 162 drives the abutment member 161 to move axially (X), so that the rear bearing inner ring 300 disengages from the connecting ring 15 and is fitted between the spindle and the outer ring of the rear bearing in the bearing housing.

[0118] In some alternative embodiments, the heating module 151 includes a heating layer disposed on the outer periphery of the connecting ring 15. By arranging the heating layer circumferentially around the connecting ring 15, the heating effect on the inner ring 300 of the rear bearing is improved.

[0119] Optionally, the heating layer may be configured as at least one of a heating pad and a heating coil.

[0120] In one optional implementation, the support body 11 includes a first support unit 111 and a second support unit 112 arranged along the axial direction X. The first support unit 111 includes a central portion and two or more extension portions, each extension portion being located in the same plane and extending radially relative to the central portion. A guide shaft 12 is disposed in the central portion, and a connecting assembly 13 is disposed in the extension portion. A second drive assembly 162 is disposed in the second support unit 112, which is arranged along the axial direction X on the side of the first support unit 111 opposite to the guide shaft 12. The abutment member 161 includes multiple abutment portions, each abutment portion passing through the gap between two adjacent extension portions along the axial direction X and used to abut against the axial end face of the inner ring 300 of the rear bearing.

[0121] Since the support body 11 is equipped with components such as guide shaft 12, connecting ring 15, connecting assembly 13, first drive mechanism 14, and second drive mechanism 16, in order to facilitate the arrangement of the above components, the support body 11 can be configured as a first support unit 111 and a second support unit 112 arranged along the axial direction X. The guide shaft 12, connecting ring 15, connecting assembly 13, first drive mechanism 14, and second drive mechanism 16 are respectively disposed in the first support unit 111 and the second support unit 112, and their output ends are offset from each other and connected to the bearing seat, the main shaft, and the inner ring 300 of the rear bearing, respectively.

[0122] By adopting the above-described arrangement, the components of the tooling body 1 can be arranged more compactly, simplifying the structure. Furthermore, it is understood that in actual arrangement, besides placing the second support unit 112 on the side of the first support unit 111 facing away from the guide shaft 12, the second support unit 112 can also be placed on the side of the first support unit 111 facing the guide shaft 12. The second support unit 112 can be provided with clearance holes that avoid the guide shaft 12 and the first drive mechanism 14 on the center of the first support unit 111, thus achieving the arrangement of the tooling body 1.

[0123] Optionally, the second drive assembly 162 can be configured as a negative pressure cylinder, and the abutment part can be configured as a negative pressure block. The negative pressure cylinder is used to drive the negative pressure block to move along the axial direction X so as to negatively press the inner ring 300 of the rear bearing into place.

[0124] Optionally, the number of negative pressure blocks can be set to two or more, with the two or more negative pressure blocks spaced apart circumferentially along the inner ring 300 of the rear bearing to form multiple action points so that the inner ring 300 of the rear bearing disengages from the connecting ring 15 and is fitted between the outer ring of the rear bearing of the spindle and the bearing housing.

[0125] Please refer to Figures 1 to 8. Figure 8 shows a schematic diagram of the structure of the rear bearing inner ring 300 installed on the tooling body 1 according to some other embodiments of this application.

[0126] In some optional embodiments, the tooling body 1 further includes a base 17, a support body 11 is supported on the base 17, the base 17 is provided with a rotating groove, the support body 11 is provided with a rotating shaft 113, the rotating shaft 113 is rotatably engaged with the rotating groove, and the extension direction of the rotating shaft 113 intersects the axial direction X.

[0127] When connecting the rear bearing inner ring 300 to the connecting ring 15 of the tooling body 1, the axial direction X of the rear bearing inner ring 300 needs to be extended vertically for lifting before being placed on the connecting ring 15. Therefore, by rotatably connecting the support body 11 to the base 17, the axial direction X of the guide shaft 12 of the support body 11 can be extended vertically during the installation of the rear bearing inner ring 300, facilitating the installation of the rear bearing inner ring 300. After the rear bearing inner ring 300 is assembled and connected, the support body 11 can be driven to rotate 90° relative to the base 17, so that the axial direction X of the guide shaft 12 of the support body 11 extends horizontally, thereby achieving horizontal assembly of the spindle and bearing housing.

[0128] Optionally, to prevent the inner ring 300 of the rear bearing from separating from the connecting ring 15 during rotation, the inner ring 300 of the rear bearing can be fixed relative to the connecting ring 15 by bolt connection, electromagnetic locking or other connection methods.

[0129] Optionally, the support body 11 can be flipped relative to the base 17 by a flipping mechanism. The flipping mechanism drives the support body 11 to flip around the rotation axis 113, so that the axial direction X of the shaft assembly tooling is flipped from the vertical direction to the horizontal direction. The flipping mechanism can be a crane.

[0130] Optionally, the rotating shaft 113 can be located on the outer edge of the support body 11. By locating the rotating shaft 113 on the outer edge of the support body 11, it is easier to rotate the support body 11 as a whole with one end as the axis. Furthermore, the rotation mechanism can achieve the rotation of the support body 11 using only a single lifting point, resulting in a simpler structure.

[0131] Please refer to Figures 1 to 11. Figure 9 shows a schematic diagram of the assembly process of the shaft system provided in one embodiment of this application. Figure 10 shows a cross-sectional view of the assembly process of the shaft system provided in one embodiment of this application. Figure 11 shows a schematic diagram of the assembly process of the shaft system provided in one embodiment of this application.

[0132] According to an embodiment of this application, a shaft assembly method is also proposed, including the following steps:

[0133] Preparation steps: Provide a shaft system assembly tooling as described in the above embodiment, and set the axial direction X of the shaft system assembly tooling along the horizontal direction;

[0134] In the pre-installation step, the first shaft structure 100 is connected to the connecting assembly 13 of the tooling body 1, and the second shaft structure 200 is connected to the guide cylinder assembly 2.

[0135] The assembly process involves inserting the second shaft structure 200 through the first shaft structure 100, sleeve the guide cylinder assembly 2 on the guide shaft 12, connecting the first drive mechanism 14 to the guide cylinder assembly 2, and driving the guide cylinder assembly 2 to move relative to the guide shaft 12 along the axial direction X through the first drive mechanism 14 until the second shaft structure 200 is installed on the first shaft structure 100.

[0136] Taking the first shaft structure 100 as the bearing housing and the second shaft structure 200 as the main shaft as an example.

[0137] In the preparation step, the main fixture 1 can be vertically hoisted so that the axial direction X of the guide shaft 12 of the main fixture 1 is set in the horizontal direction. During the pre-installation step, the bearing housing is connected and locked to the connecting assembly 13 of the main fixture 1. Locking can be, but is not limited to, electromagnetic locking or other mechanical locking methods. Simultaneously, the spindle is connected and fixed to the guide cylinder assembly 2. In the assembly step, the spindle is hoisted and a parallel-drive machine is used to slowly insert the spindle into the bearing housing along the axial direction X. The guide cylinder assembly 2 is gradually guided through the guide shaft 12 to adjust the tooling angle of the guide cylinder assembly 2, ensuring the coaxiality of the horizontal assembly of the spindle and the bearing housing.

[0138] Taking the guide cylinder assembly 2 with a locking hole K1, and the first drive mechanism 14 including a locking member 141 and a first drive assembly 142 as an example, when the spindle moves to the preset position of the bearing seat, the locking member 141 is inserted into the locking hole K1 and then locked in place. The first drive mechanism 14 drives the guide cylinder assembly 2 to move relative to the guide shaft 12 along the axial direction X, thus horizontally assembling the spindle into the bearing seat. This horizontal assembly method eliminates the need to flip the shaft system structure after assembly, reducing assembly difficulty and improving assembly efficiency.

[0139] Understandably, in the actual assembly process, before the assembly step, the following steps are also included: connecting the inner ring of the front bearing to the spindle, and connecting the outer ring of the front bearing and the outer ring of the rear bearing to the bearing housing. Therefore, after the spindle is installed in the bearing housing, the inner ring 300 of the rear bearing needs to be assembled between the spindle and the outer ring of the rear bearing in the bearing housing.

[0140] To enable the installation of the rear bearing inner ring 300, in some optional embodiments, the tooling body 1 further includes a connecting ring 15 disposed on the support body 11, the connecting ring 15 having a heating module 151.

[0141] The pre-installation steps also include: connecting the inner ring 300 of the rear bearing to the connecting ring 15;

[0142] The assembly steps also include: heating the inner ring 300 of the rear bearing by heating the heating module 151, and assembling the inner ring 300 of the rear bearing between the first shaft structure 100 and the second shaft structure 200.

[0143] In the pre-installation step, before connecting and locking the bearing housing to the connecting assembly 13 of the tooling body 1, the rear bearing inner ring 300 is inserted into the connecting ring 15. In the assembly step, after the spindle is installed in the bearing housing, the rear bearing inner ring 300 is heated by the heating module 151 of the connecting ring 15, so that the rear bearing inner ring 300 can be directly installed between the rear bearing outer ring of the spindle and the bearing housing in a heated state.

[0144] Optionally, the tooling body 1 also includes a second drive mechanism 16. The second drive mechanism 16 may be equipped with a sensor to push the heated rear bearing inner ring 300 between the spindle and the bearing housing. The degree of pressing of the rear bearing inner ring 300 can be fed back by the sensor. In addition, during this process, the first drive mechanism 14 can also continue to start to achieve negative pressure positioning of the rear bearing inner ring 300 by repeatedly pressing it.

[0145] Based on this, the shaft assembly tooling and shaft assembly method in the embodiments of this application can realize the horizontal assembly and alignment of the spindle and bearing housing, so as to automatically assemble the spindle into the bearing housing. At the same time, the shaft assembly tooling also has the functions of heating and automatic assembly of the rear bearing inner ring 300, realizing the rapid assembly of the rear bearing inner ring 300 and ensuring the realization of the horizontal assembly process.

[0146] Some embodiments of this application provide an assembly device as shown in FIG12 for installing a second shaft structure 200 onto a first shaft structure 100. Referring to FIG13, the assembly device includes a hoisting body 4 and a turning mechanism 5. The hoisting body 4 includes a load-bearing beam 41 and a lifting beam 42 connected to each other. The load-bearing beam 41 and the lifting beam 42 are intersecting. The lifting beam 42 is provided with a lifting structure 421 for connecting to a first lifting device. The hoisting body 4 can flip the second shaft structure 200 under the action of the first lifting device so that the second shaft structure 200 can be installed into the first shaft structure 100. The turning mechanism 5 is disposed on the hoisting body 4. The turning mechanism 5 includes a first driver 51 and a rotating structure 52. The rotating structure 52 is rotatably connected to the load-bearing beam 41 and is used to connect with the end face of the second shaft structure 200. The first driver 51 is drively connected to the rotating structure 52 to drive the rotating structure 52 to rotate the second shaft structure 200 relative to the load-bearing beam 41.

[0147] The second shaft structure 200 can be the main shaft of a wind turbine generator set. As a torque transmission component, it can transmit the torque received by the wind turbine rotor to the generator to drive the generator to rotate. Currently, as wind turbine generator sets become larger and larger, the main shaft, as a torque transmission component, is also becoming larger and larger, making it increasingly difficult to install it into the first shaft structure 100.

[0148] The hoisting body 4 refers to the component used to connect and support the second shaft structure 200 during the hoisting process, enabling the second shaft structure 200 to be easily flipped and installed. The load-bearing beam 41 and the lifting beam 42 are two interconnected beam structures in the hoisting body 4. As the main components of the hoisting body 4, they are used to transfer loads and provide an installation platform for other components in the assembly device.

[0149] The load-bearing beam 41 can be a beam structure that houses the turning mechanism 5, capable of bearing the load of the second shaft structure 200 connected to the turning mechanism 5. The lifting beam 42 can be a beam structure for connecting to the first lifting device, which lifts the main shaft connected to the turning mechanism 5 by moving the lifting beam 42.

[0150] The bearing beam 41 and the lifting beam 42 are intersecting, meaning that the extension direction of the bearing beam 41 is perpendicular to the extension direction of the lifting beam 42. This allows the main shaft, installed above the bearing beam 41 via the turning mechanism 5, to be parallel to the lifting beam 42, facilitating the first lifting device's lifting action on the lifting beam 42 to adjust the position of the main shaft. Referring to Figures 14 and 15, the lifting body 4, under the action of the first lifting device, can change the second shaft structure 200 from a vertical orientation to a horizontal orientation, achieving a rotation of the main shaft. This allows the second shaft structure 200 to be installed horizontally within the first shaft structure 100.

[0151] The turning mechanism 5 can be a mechanism used to turn the second shaft structure 200 during the process of installing the second shaft structure 200 into the first shaft structure 100. The rotating structure 52 can be a component used to drive the second shaft structure 200 to rotate. It is rotatably connected to the bearing beam 41 and is used to connect with the end face of the second shaft structure 200, so that when the rotating structure 52 rotates relative to the bearing beam 41, it can drive the second shaft structure 200 to rotate.

[0152] For example, the rotary structure 52 can be configured as a rotary support or as a turntable bearing 213 with external teeth, so that when the end face of the second shaft structure 200 is connected to the rotary structure 52, it can drive the second shaft structure 200 to rotate around its own axis.

[0153] The first actuator 51 can be a device for driving the rotation of the slewing structure 52. The first actuator 51 is mounted on the hoisting body 4, and its output end is connected to the slewing structure 52, so that the first actuator 51 can drive the slewing structure 52 to rotate relative to the supporting beam 41.

[0154] In the above structure, since the hoisting body 4 is equipped with a turning mechanism 5, the assembly device can drive the second shaft structure 200 connected to the rotating structure 52 of the turning mechanism 5 to rotate during the process of installing the second shaft structure 200 to the first shaft structure 100. This allows the second shaft structure 200 to be installed into the first shaft structure 100 while rotating, reducing the assembly difficulty of the second shaft structure 200 and the first shaft structure 100 and improving the assembly efficiency of the wind turbine generator set.

[0155] In some embodiments, referring to FIG16, the assembly device further includes a limiting mechanism 6, the limiting mechanism 6 including a support arm 61 and a connector 62 disposed on the support arm 61, the connector 62 being able to be connected to the lifting beam 42, and the support arm 61 being used to connect to the first shaft structure 100.

[0156] The limiting mechanism 6 can be a mechanism used to limit the relative position of the hoisting body 4 and the first shaft structure 100. The support arm 61 can be an arm-shaped member used to support between the first shaft structure 100 and the lifting beam 42, with one end for connecting to the first shaft structure 100 and the other end for connecting to the lifting beam 42.

[0157] The connector 62 can be a component used to connect the support arm 61 to the lifting beam 42. By connecting the support arm 61 to the first shaft structure 100 and using the connector 62 to connect the support arm 61 to the side wall of the lifting beam 42, the possibility of the second shaft structure 200 driving the first shaft structure 100 to rotate during the turning process can be reduced.

[0158] For example, the limiting mechanism 6 includes two opposing support arms 61, one end of which is connected to the first shaft structure 100, and the other end is provided with a connector 62. The connector 62 may include clamping wheels, which are arranged in a horizontal direction. The ends of the two support arms 61 away from the first shaft structure 100 are clamped to two opposing sides of the lifting beam 42 by the clamping wheels, so as to clamp and limit the lifting beam 42 from both sides. This makes it less likely that the friction between the second shaft structure 200 and the first shaft structure 100 will cause positional misalignment of the lifting body 4 and the second shaft structure 200 when the lifting body 4 rotates and inserts the second shaft structure 200 into the first shaft structure 100. Moreover, the clamping wheels can roll during the process of the second shaft structure 200 being inserted into the first shaft structure 100, so that the second shaft structure 200 can be smoothly inserted into the first shaft structure 100. The connector 62 may also include connecting bolts. The ends of the two support arms 61 away from the first shaft structure 100 are respectively held against the two opposite sides of the lifting beam 42 by the connecting bolts, so as to clamp and limit the lifting beam 42 from both sides, so that when the lifting body 4 rotates the second shaft structure 200 into the first shaft structure 100, the friction between the second shaft structure 200 and the first shaft structure 100 is not likely to cause positional misalignment of the lifting body 4 and the second shaft structure 200.

[0159] In some embodiments, continuing to refer to FIG13, the rotary structure 52 is provided with a positioning structure 521, which is used to connect with the end face of the second shaft structure 200.

[0160] The positioning structure 521 can be a structure used for guiding and positioning the second shaft structure 200 when it is installed on the rotary structure 52, and it is used to make the central axis of the second shaft structure 200 coincide with the central axis of the rotary structure 52. For example, multiple positioning structures 521 are provided, and multiple positioning structures 521 are disposed on the surface of the rotary structure 52 facing the second shaft structure 200, and the second shaft structure 200 is connected to the rotary structure 52 through the positioning structures 521.

[0161] The connection between the positioning structure 521 and the end face of the second shaft structure 200 can be such that the positioning structure 521 can include a positioning pin and a connecting bolt, the end of the second shaft structure 200 is provided with a connecting hole and a positioning hole, the connecting hole cooperates with the positioning pin, and the connecting bolt connects the second shaft structure 200 to the rotary structure 52 by connecting with the connecting hole.

[0162] In some embodiments, the positioning structure 521 is connected to the rotary structure 52 by connecting bolts, making the positioning structure 521 easy to disassemble and replace, and enabling the assembly device to adapt to different models of the second shaft structure 200 by replacing different models of the positioning structure 521.

[0163] In some embodiments, the assembly device further includes a flip base 7, which is provided with a rotating shaft 71, and the bearing beam 41 is provided with a rotating sleeve 411, wherein the rotating shaft 71 is rotatably disposed in the inner cavity of the rotating sleeve 411.

[0164] The tilting base 7 can be a support used to assist in tilting the hoisting body 4. By setting a rotating shaft 71 on the tilting base 7 and a rotating sleeve 411 on the bearing beam 41, and rotatably setting the rotating shaft 71 in the inner cavity of the rotating sleeve 411, the hoisting body 4 can rotate around the rotating shaft 71 when tilting, which helps to improve the convenience of tilting the hoisting body 4 using the first lifting device.

[0165] For example, the flipping base 7 can be set on the ground, which can provide greater support when the lifting body 4 flips, so that the lifting body 4 carrying the second shaft structure 200 can flip smoothly.

[0166] In some embodiments, the wall of the rotating sleeve 411 is provided with a disengagement port 4111 that communicates with the inner cavity of the rotating sleeve 411, and the cross-sectional width of the disengagement port 4111 is greater than the diameter of the rotating shaft 71.

[0167] The exit port 4111 can be an opening for disengaging the rotating shaft 71 from the inner cavity of the rotating sleeve 411. By setting the cross-sectional width of the exit port 4111 to be greater than the diameter of the rotating shaft 71, the rotating shaft 71 can be disengaged from the inner cavity of the rotating sleeve 411 along the exit port 4111.

[0168] By opening a release port 4111 in the wall of the rotating sleeve 411 that communicates with the inner cavity of the rotating sleeve 411, the rotating shaft 71 in the inner cavity of the rotating sleeve 411 can be released from the release port 4111, so that the lifting body 4 can be lifted to a suitable height by the first lifting device, which facilitates its subsequent installation into the first shaft structure 100.

[0169] In some embodiments, the lifting structure 421 includes at least two lifting members spaced apart for connection to the first lifting device, and at least one lifting member is positionally adjustable to the lifting beam 42.

[0170] The lifting component may be a component installed on the lifting beam 42 for connection with the first lifting device, so that the first lifting device can lift the lifting beam 42.

[0171] For example, the first lifting device can be a crane, and the lifting component can be a lifting lug. The crane can be connected to the lifting lug by lifting straps, hooks and other lifting devices to lift the lifting body 4 so as to transport the lifting body 4.

[0172] At least one lifting component is adjustablely connected to the lifting beam 42. This could be one lifting component adjustablely connected to the lifting beam 42, or two lifting components adjustablely connected to the lifting beam 42.

[0173] By adjusting the position of at least one lifting component to the lifting beam 42, the connection position between the first lifting device and the lifting beam 42 is adjustable, the distance between the two lifting components can be adjusted, and the angle between the lifting beam 42 and the horizontal plane can be adjusted by adjusting the distance between the two lifting components. This allows the angle between the central axis of the second shaft structure 200 and the horizontal plane to be adjusted, facilitating the installation of the second shaft structure 200 into the first shaft structure 100.

[0174] In some embodiments, referring to FIG17, the assembly device further includes an adjustment component 8, which includes a sliding sleeve 81 and a second driver 82. The sliding sleeve 81 is slidably sleeved on the lifting beam 42, the second driver 82 is connected to the lifting body 4, and the output end of the second driver 82 is drivenly connected to the sliding sleeve 81. The position-adjustable lifting component is fixed on the sliding sleeve 81.

[0175] Adjustment component 8 can be a component used to adjust the position of the lifting member. Sliding sleeve 81 can be a component that is slidably sleeved on the outside of the lifting beam 42, and can slide on the outside of the lifting beam 42. By setting the lifting member on the sliding sleeve 81, the position of the lifting member is adjustable on the lifting beam 42.

[0176] The second driver 82 can be a driver used to drive the sliding sleeve 81 to slide. By fixing the second driver 82 to the hoisting body 4, the output end of the second driver 82 is connected to the sliding sleeve 81, so that the second driver 82 can drive the sliding sleeve 81 to slide along the extension direction of the hoisting beam 42.

[0177] For example, the second actuator 82 can be a hydraulic cylinder or a servo electric cylinder, so that the sliding sleeve 81 can slide along the extension direction of the lifting beam 42 under the drive of the second actuator 82, thereby realizing the position adjustment of the lifting component located on the sliding sleeve 81.

[0178] In some embodiments, the assembly apparatus further includes a tilt sensor connected to the end face of the second shaft structure 200 away from the rotary structure 52, the tilt sensor being used to detect the horizontal state of the second shaft structure 200.

[0179] The tilt sensor can be a sensor used to detect the angle between the second shaft structure 200 and the horizontal plane, which helps to keep the second shaft structure 200 horizontal and improves the ease of installation of the second shaft structure 200 into the first shaft structure 100.

[0180] Due to the effect of gravity, the end of the second shaft structure 200 that is away from the rotating structure 52 is more likely to tilt and droop. By connecting the tilt sensor to the end face of the second shaft structure 200 that is away from the rotating structure 52, it is helpful to keep the part of the second shaft structure 200 that is prone to tilting and drooping horizontal.

[0181] In some embodiments, the assembly apparatus further includes a controller electrically connected to the tilt sensor and the second driver 82.

[0182] The controller can be used to control the second actuator 82 to adjust the horizontal state of the second shaft structure 200. By electrically connecting the controller to the tilt sensor and the second actuator 82, the controller can control the action of the second actuator 82 based on the horizontal state of the second shaft structure 200 measured by the tilt sensor, enabling the controller to achieve a relatively accurate adjustment of the horizontal state of the second shaft structure 200.

[0183] In some embodiments, the controller can be a centralized or distributed controller. For example, the controller can be a single microcontroller or a combination of multiple distributed microcontrollers. The microcontroller can run a control program to control the second driver 82 to perform its function.

[0184] In some embodiments, the assembly device further includes a guide tube assembly 2, which is connected to the end face of the second shaft structure 200 away from the rotary structure 52. The guide tube assembly 2 is provided with a lifting device for connecting to a second lifting device.

[0185] The guide tube assembly 2 can be a mechanism used to assist the second shaft structure 200 in being installed into the bearing 213. By connecting the guide tube assembly 2 to the end face of the second shaft structure 200 away from the rotating structure 52 and providing a lifting device on the guide tube assembly 2, the second lifting device can lift the end of the second shaft structure 200 away from the rotating structure 52 through the lifting device on the guide tube assembly 2. This helps to reduce the degree of tilting and drooping of the end of the second shaft structure 200 away from the rotating structure 52, and helps to reduce the difficulty of installing the second shaft structure 200 into the first shaft structure 100.

[0186] The lifting device provided on the guide tube assembly 2 can be a lifting lug or a lifting ring. Those skilled in the art can set the form of the lifting device according to the actual situation.

[0187] In some embodiments, referring to FIG18, the guide cylinder assembly 2 includes a second connecting flange 22, a bearing 213 and a pull member 214. The second connecting flange 22 is rotatably connected to the pull member 214 via the bearing 213. The second connecting flange 22 is connected to the end face of the second shaft structure 200 away from the rotary structure 52. The pull member 214 is used to connect with the first shaft structure 100.

[0188] The pull member 214 may be a component in the guide tube assembly 2 that does not rotate with the second connecting flange 22, and is used to receive the pulling force provided by an external device.

[0189] The bearing 213 may be a bearing 213 capable of providing axial X force. For example, the bearing 213 may be a thrust ball bearing 213 or a thrust roller bearing 213, so that the bearing 213 can transmit the force on the pulling member 214 to the second connecting flange 22, so as to drive the second shaft structure 200 to pass through and extend into the first shaft structure 100.

[0190] The second connecting flange 22 can be a disc-shaped component that rotates synchronously with the second shaft structure 200. The second connecting flange 22 is rotatably connected to the pulling member 214 through the bearing 213, so that the second connecting flange 22 can rotate synchronously with the second shaft structure 200 relative to the pulling member 214 during the process of the pulling member 214 pulling the second shaft structure 200 into the first shaft structure 100. This allows the second shaft structure 200 to be rotated and installed into the first shaft structure 100 under the pulling of the pulling member 214, which helps to reduce the difficulty of installing the second shaft structure 200 into the first shaft structure 100.

[0191] In some embodiments, continuing to refer to FIG12, the assembly device further includes a first drive mechanism 14, which is connected to the first shaft structure 100 and to the pull member 214.

[0192] The first drive mechanism 14 may be a device for applying a pulling force to the pulling member 214, so that the end of the second shaft structure 200 away from the rotating structure 52 passes through and extends into the first shaft structure 100, thereby fitting the second shaft structure 200 into the first shaft structure 100. By being connected to the side of the first shaft structure 100 away from the rotating structure 52, the first drive mechanism 14 is able to apply sufficient pulling force to the second shaft structure 200 to pull it through the first shaft structure 100.

[0193] The first drive mechanism 14 is fixed on the side of the first shaft structure 100 away from the rotary structure 52, and its output end can pass through the inner cavity of the first shaft structure 100 and be connected to the end of the second shaft structure 200 away from the rotary structure 52.

[0194] In some embodiments, the assembly apparatus further includes a support platform 9, on which a first shaft structure 100 is disposed.

[0195] The support platform 9 can be a platform used to support the first shaft structure 100. By setting the first shaft structure 100 on the support platform 9, the first shaft structure 100 can be stably fixed, making it easier for the second shaft structure 200 to be stably installed into the first shaft structure 100.

[0196] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A shafting assembly tool for assembling a first shaft structure (100) and a second shaft structure (200), comprising: a tool body (1) connectable to the first shaft structure (100); a guide cylinder assembly (2) connectable to the second shaft structure (200); the tool body (1) comprises a support body (11) and a first driving mechanism (14) arranged on the support body (11), the first driving mechanism (14) being capable of driving the guide cylinder assembly (2) to move along an axial direction (X) relative to the support body (11).

2. The shafting assembly fixture of claim 1 wherein, the tool body (1) further comprises a guide shaft (12) arranged on the support body (11) and a connecting assembly (13) for connecting the first shaft structure (100), the guide cylinder assembly (2) being sleevable on an outer periphery of the guide shaft (12).

3. The shafting assembly tooling of claim 2 wherein, a plurality of the connecting assemblies (13) are distributed at intervals around the guide shaft (12), and the first driving mechanism (14) is detachably connected with the guide cylinder assembly (2).

4. The shafting assembly tooling of claim 3 wherein, the guide cylinder assembly (2) is provided with a locking hole (K1), and the first driving mechanism (14) comprises a first driving assembly (142) and a locking piece (141) arranged at an output end of the first driving assembly (142), the locking piece (141) being configured to be clamped in the locking hole (K1) and driven by the first driving assembly (142) to reciprocate along the axial direction (X) so as to mount the second shaft structure (200) on the first shaft structure (100).

5. The shafting assembly tooling of claim 4 wherein, the guide cylinder assembly (2) has a rotational freedom degree about the axial direction (X); the locking hole (K1) comprises an arc segment (K11) and an inlet segment (K12) connected to one end of the arc segment (K11), the arc segment (K11) being arranged in extension along a circumferential direction of the guide shaft (12), and the inlet segment (K12) having a larger hole diameter than the arc segment (K11), the locking piece (141) being configured to extend into the locking hole (K1) from the inlet segment (K12) and be clamped with the arc segment (K11).

6. The shafting assembly tooling of claim 4 wherein, the locking hole (K1) comprises a first end and a second end arranged along the axial direction (X), the first end being located on a side away from the guide shaft (12), the first end having a larger opening area than the second end, and the locking piece (141) being configured to be fitted in the locking hole (K1) and abut against a hole wall of the locking hole (K1).

7. The shafting assembly kit of any one of claims 3 to 6, wherein, the shafting assembly tool further comprises a guide seat assembly (3) connectable to the first shaft structure (100), the guide seat assembly (3) being provided with a plurality of connecting portions (31) fitted with the connecting assemblies (13), and the connecting assemblies (13) being connected with the first shaft structure (100) through the guide seat assembly (3).

8. The shafting assembly tooling of claim 7 wherein, The guide seat assembly (3) comprises a guide seat arranged along the axial direction (X) and provided with the connecting portion (31), and a first connecting flange detachably connected to one side of the guide seat away from the connecting portion (31), the guide seat being connected to the first shaft structure (100) through the first connecting flange.

9. The shafting assembly kit of any one of claims 3 to 6, wherein, The guide cylinder assembly (2) comprises a guide cylinder (21) and a second connecting flange (22) detachably connected to the guide cylinder (21), the guide cylinder (21) being connected to the second shaft structure (200) through the second connecting flange (22).

10. The shafting assembly tooling of claim 9 wherein, The guide cylinder (21) comprises a guide cylinder body (211) connected to the second connecting flange (22) and a guide portion (212) arranged on the guide cylinder body (211), the guide portion (212) being arranged protruding radially towards the guide shaft (12) relative to the guide cylinder body (211) and sleeved on the outer periphery of the guide shaft (12).

11. The shafting assembly kit of any one of claims 3 to 6, wherein, The guide shaft (12) comprises a first shaft segment (121) and a second shaft segment (122) arranged along the axial direction (X), the first shaft segment (121) being connected to the support body (11) through the second shaft segment (122), the diameter of the second shaft segment (122) being matched with the inner diameter of the guide cylinder assembly (2); The diameter of the first shaft segment (121) is smaller than the diameter of the second shaft segment (122), and gradually increases along the direction close to the second shaft segment (122).

12. The shafting assembly kit of any one of claims 3 to 6, wherein, The tool body (1) further comprises a connecting ring (15) coaxially arranged on the support body (11) with the guide shaft (12) and used for connecting the inner ring of the bearing, the connecting ring (15) being provided with a heating module (151) used for heating the inner ring of the bearing.

13. The shafting assembly tooling of claim 12 wherein, The connecting ring (15) is used for being embedded on the inner periphery side of the inner ring of the bearing, and the tool body (1) further comprises a second driving mechanism (16); The second driving mechanism (16) comprises a second driving assembly (162) and an abutting piece (161) arranged on the output end of the second driving assembly (162), the abutting piece (161) being configured to abut the axial end face of the inner ring of the bearing, and the second driving assembly (162) being used for driving the abutting piece (161) to move along the axial direction (X) so as to separate the inner ring of the bearing from the connecting ring (15) and sleeve between the first shaft structure (100) and the second shaft structure (200).

14. The shafting assembly fixture of claim 13 wherein, The heating module (151) comprises a heating layer arranged on the outer periphery of the connecting ring (15).

15. The shafting assembly fixture of claim 13 wherein, The support body (11) comprises a first support unit (111) and a second support unit (112) arranged along an axial direction (X), the first support unit (111) comprises a center part and two or more extension parts, each of the extension parts is arranged in the same plane and extends radially relative to the center part, the guide shaft (12) is arranged on the center part, and the connecting assembly (13) is arranged on the extension part; The second driving assembly (162) is arranged on the second support unit (112), the second support unit (112) is arranged on the side of the first support unit (111) away from the guide shaft (12) along the axial direction (X), and the abutting piece (161) comprises a plurality of abutting parts, each of the abutting parts is arranged in the gap between two adjacent extension parts along the axial direction (X) and is used for abutting against the axial end surface of the inner ring of the bearing.

16. The shafting assembly fixture of claim 12 wherein, The shafting assembly tool further comprises a base (17), the support body (11) is supported on the base (17), the base (17) is provided with a rotating groove, the support body (11) is provided with a rotating shaft (113), the rotating shaft (113) is in rotating fit with the rotating groove, and the extension direction of the rotating shaft (113) intersects the axial direction (X).

17. The shafting assembly fixture of claim 1 wherein, The shafting assembly tool further comprises an assembling device, the assembling device comprises: A hoisting body comprising a load-bearing beam and a hoisting beam connected to each other, the load-bearing beam and the hoisting beam are arranged to intersect each other, the hoisting beam is provided with a hoisting structure for connecting with a first hoisting device; the hoisting body can be turned over under the action of the first hoisting device, so that the second shaft structure is loaded into the first shaft structure; A turning mechanism arranged on the hoisting body, the turning mechanism comprises a first driver and a rotating structure, the rotating structure is rotatably connected to the load-bearing beam, the rotating structure is used for connecting with the end surface of the second shaft structure, and the first driver is in transmission connection with the rotating structure to drive the rotating structure to rotate the second shaft structure relative to the load-bearing beam.

18. The shafting assembly tooling of claim 17 wherein, The shafting assembly tool further comprises a limiting mechanism, the limiting mechanism comprises a support arm and a connecting piece arranged on the support arm, the connecting piece can be connected to the hoisting beam, and the support arm is used for connecting with the first shaft structure.

19. The shafting assembly fixture of claim 17 wherein, The rotating structure is provided with a positioning structure, and the positioning structure is used for connecting with the end surface of the second shaft structure.

20. The shafting assembly tooling of claim 17 wherein, The shafting assembly tool further comprises a turnover base, the turnover base is provided with a rotating shaft, the load-bearing beam is provided with a rotating sleeve, and the rotating shaft is rotatably arranged in the inner cavity of the rotating sleeve.

21. The shafting assembly fixture of claim 20 wherein, The wall of the rotating sleeve is provided with a discharge port in communication with the inner cavity of the rotating sleeve, and the cross-sectional width of the discharge port is greater than the diameter of the rotating shaft.

22. The shafting assembly tooling of claim 20 wherein, The hoisting structure comprises at least two hoisting members arranged at intervals and used for connecting with the first hoisting device, and at least one of the hoisting members is adjustably connected to the hoisting beam.

23. The shafting assembly tooling of claim 22 wherein, The shafting assembly tool further comprises an adjusting assembly, the adjusting assembly comprises a sliding sleeve and a second driver, the sliding sleeve is sleeved on the hoisting beam, the second driver is connected to the hoisting body, the output end of the second driver is drivingly connected to the sliding sleeve, and a position-adjustable hoisting member is fixed to the sliding sleeve.

24. The shafting assembly tooling of claim 23 wherein, The shafting assembly tool further comprises an inclination sensor connected to the end face of the second shaft structure away from the slewing structure, and the inclination sensor is used to detect the horizontal state of the second shaft structure.

25. The shafting assembly kit of claim 24 wherein, The shafting assembly tool further comprises a controller electrically connected to the inclination sensor and the second driver.

26. The shafting assembly kit of any of claims 17-25, wherein, The guide cylinder assembly is connected to the end face of the second shaft structure away from the slewing structure, and the guide cylinder assembly is provided with a lifting appliance used to be connected to a second hoisting device.

27. The shafting assembly kit of claim 26 wherein, The guide cylinder assembly comprises a second connecting flange and a guide cylinder, the guide cylinder comprises a bearing and a pulling member, the second connecting flange is rotatably connected to the pulling member through the bearing, the second connecting flange is connected to the end face of the second shaft structure away from the slewing structure, and a lifting appliance is arranged on the pulling member.

28. The shafting assembly tooling of claim 17 wherein, The shafting assembly tool further comprises a bearing platform, and the first shaft structure is arranged on the bearing platform. 29.A shafting assembly method, comprising the following steps: a preparation step of providing the shafting assembly tool according to any one of claims 1 to 28, the tool body (1) comprising a guide shaft (12) and a connecting assembly (13) arranged on the support body (11), and arranging the shafting assembly tool in a horizontal direction along the axial direction (X); a pre-assembly step of connecting the first shaft structure (100) to the connecting assembly (13) of the tool body (1) and connecting the second shaft structure (200) to the guide cylinder assembly (2); an assembly step of arranging the second shaft structure (200) in the first shaft structure (100), sleeving the guide cylinder assembly (2) on the guide shaft (12), connecting the first driving mechanism (14) to the guide cylinder assembly (2), and driving the guide cylinder assembly (2) to move relative to the guide shaft (12) along the axial direction (X) by the first driving mechanism (14) until the second shaft structure (200) is arranged in the first shaft structure (100).

30. The shafting assembly method of claim 29 wherein, The tool body (1) further comprises a connecting ring (15) arranged on the support body (11), and the connecting ring (15) is provided with a heating module (151); The pre-assembly step further comprises connecting a bearing inner ring to the connecting ring (15); The assembly step further comprises heating the bearing inner ring by the heating module (151) and assembling the bearing inner ring between the first shaft structure (100) and the second shaft structure (200).

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