An auxiliary tool and assembly method for assembling a suspension link

Abstract

Provided are an auxiliary tool and an assembling method for assembling a suspension connecting piece. The auxiliary tool comprises a base and an axial piece. The base comprises a suspension plate for detachable fixed connection with a torsion plate. The axial piece is arranged on the base and coaxially matches with a shaft part, so as to position the auxiliary tool relative to a second assembling area, and further position the torsion plate connected with the suspension plate in a position for matching with a lifting lug support, so as to determine the assembling position of the lifting lug support in a first assembling area by the torsion plate. The auxiliary tool serves as a replacement part, and the existing shaft part on the to-be-assembled piece serves as an actual positioning reference, so that high-quality installation of the suspension connecting piece is realized.

Description

Technical Field

[0001] This invention relates to the field of rail-mounted crane mechanical assembly technology, and in particular to an auxiliary tooling and assembly method for assembling suspension connectors. Background Technology

[0002] Rail-mounted gantry cranes typically have suspension connectors for connecting transmission components such as gearboxes. In a specific double-suspension elastic torsion arm structure, the suspension connector includes a lug bracket and a torsion plate connected to the lug bracket. The lug bracket is fixed to the corresponding installation position on the gantry crane, and the torsion plate is connected to the lug bracket through structures such as elastic bodies, bushings, pins, or bearings, thus forming a suspension connector for bearing and transmitting torque.

[0003] Because the aforementioned suspension connector has vertically positioned lug brackets, and sliding bearings can be installed in the relevant pin holes, the relative positional accuracy requirements between the pair of lugs of the lug bracket and between the lug bracket and the torsion plate are relatively high. For example, in one specific structure, approximately 16.5mm bushings need to be installed on the inner arms of both lugs, and these bushings need to fit tightly with the corresponding pins, bearings, and other structures. Therefore, if there are significant deviations in the spacing, position, angle, and hole relationship of the pair of lugs of the lug bracket, subsequent components may be difficult to install properly.

[0004] Traditional assembly processes typically employ two methods. One existing method involves first welding and fixing the lifting lug bracket according to the design dimensions, followed by the installation of components such as the gearbox and torsion plate. However, dimensional and angular deviations can occur during the manufacturing, positioning, and welding processes of the lifting lug, especially in the absence of actual assembly benchmarks. Relying solely on theoretical dimensions is insufficient to fully eliminate the cumulative errors of the dimensional chain. Therefore, after the lifting lug is welded, problems may arise such as mismatch in the relative positions of the gearbox and torsion arm, difficulty in installing bushings, or inability to properly engage pins and bearings. In severe cases, rework of the welded lifting lug bracket may be necessary.

[0005] Another existing assembly method involves first installing the gearbox onto the trolley mechanism, and then assembling and welding the lifting lug brackets on-site according to the actual positions of the gearbox and torque arm. Although this method can use the actually installed gearbox as the assembly benchmark, the gearbox is large in size and weight, and there are safety risks such as the gearbox tipping over during bracket positioning and welding. In addition, on-site hot work may also cause thermal effects on the gearbox and its accessories.

[0006] It is necessary to propose a new assembly mechanism to assemble this suspension connector with high quality. Summary of the Invention

[0007] One object of the present invention is to provide an auxiliary tooling for assembling suspension connectors.

[0008] The tooling for achieving the above objectives includes: a base, including a suspension plate for detachably fixed connection with the torsion plate; and an axial member disposed on the base, the axial member for coaxially engaging with the shaft portion to position the auxiliary tooling relative to the second assembly area, and thereby positioning the torsion plate connected to the suspension plate in a positioning position for engaging with the lug bracket, so as to determine the assembly position of the lug bracket in the first assembly area by means of the torsion plate.

[0009] In one or more embodiments, the base further includes a pair of parallel connecting plates, the suspension plate being connected to the ends of the two connecting plates respectively, the two connecting plates being provided with axial mounting holes, and the axial member passing through the two axial mounting holes.

[0010] In one or more embodiments, the base further includes a reinforcing bracket connected between the suspension plate and the connecting plate.

[0011] In one or more embodiments, the auxiliary tooling further includes a lifting part disposed on the base for connection with lifting equipment.

[0012] Another object of the present invention is to provide an assembly method for a suspension connector, the suspension connector including a lug bracket and a torsion plate for connecting with the lug bracket, the suspension connector being assembled on a component to be assembled, the component to be assembled including a first assembly area and a second assembly area, the first assembly area being used to assemble the lug bracket, the second assembly area having a shaft portion, the assembly method including the following steps: connecting the torsion plate to a suspension plate of an auxiliary tooling, so that the torsion plate and the auxiliary tooling are connected as one unit; coaxially engaging the axial component of the auxiliary tooling with the shaft portion, so that the auxiliary tooling is positioned relative to the second assembly area, and the torsion plate is in a positioning position engaging with the lug bracket; engaging the lug portion of the lug bracket with the torsion plate to determine the assembly position of a pair of lug portions in the first assembly area; fixing the pair of lug portions with a connecting plate to form a lug bracket; removing the torsion plate from the auxiliary tooling and connecting it to the lug bracket to form a suspension connector; fixing the suspension connector in the first assembly area.

[0013] In one or more embodiments, before the axial component of the auxiliary tooling is coaxially fitted with the shaft, the lifting part of the auxiliary tooling is connected by a lifting device, so that the auxiliary tooling and the torsion plate are hoisted together to the second assembly area.

[0014] In one or more embodiments, after the axial member is coaxially fitted with the shaft, the posture of the auxiliary tooling is adjusted so that the torsion plate achieves a preset perpendicularity and / or parallelism.

[0015] In one or more embodiments, when the pair of said lifting lug brackets are engaged with the first assembly area, an elastic pad is fitted below the first assembly area.

[0016] In one or more embodiments, the connecting plate is first spot-welded to a pair of the lifting lugs, and after surface treatment, the connecting plate and the lifting lugs are then completely welded together to form the lifting lug bracket.

[0017] In one or more embodiments, the surface treatment step includes applying paint.

[0018] The aforementioned auxiliary tooling serves as a substitute, using the existing shaft on the part to be assembled as the actual positioning reference. This positioning reference is transferred to the actual torsion plate through the axial component, base, and suspension plate, and the torsion plate is further used to position a pair of lifting lug brackets. Therefore, there is no need for on-site welding using the gearbox body, nor is it necessary to determine the position of the lifting lug brackets based on theoretical dimensions, which can reduce assembly difficulties caused by the accumulation of dimensional tolerances. Attached Figure Description

[0019] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, wherein: Figure 1 It is a schematic diagram of the rail-mounted crane's trolley mechanism, gearbox, and suspension connectors; Figure 2 This is a schematic diagram of the suspension connector; Figure 3 This is a schematic diagram of the auxiliary tooling; Figure 4 This is a schematic diagram showing the relative positions of the auxiliary tooling and the lifting lug bracket; Figure 5 This is a schematic diagram of the auxiliary tooling being assembled into the second assembly area; Figure 6 This is a flowchart of the assembly method for the suspension connector. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0021] It should be noted that these and other accompanying drawings are merely examples and are not drawn to scale, and should not be construed as limiting the scope of protection of the present invention.

[0022] Figure 1 The diagram shows the trolley mechanism C of the rail-mounted crane, with the gearbox A located on the left and the suspension connector B on the right. Gearbox A includes a rotating shaft A0, which mates with a shaft on the rail-mounted crane mechanism C. Gearbox A and suspension connector B are connected by bolts or other connecting components D.

[0023] The suspension connector B is specifically a double-suspension elastomer torsion arm connection structure, which includes a lug bracket 11 and a torsion plate 12, as follows: Figure 2 As shown.

[0024] The lifting lug bracket 11 may include a connecting plate 111 for fixing to the rail crane trolley mechanism C and a pair of lifting lugs 110 extending outward from the mounting portion. The lifting lugs 110 are provided with connecting holes for mounting pins, bushings, sliding bearings, or other hinge components. The lifting lug brackets 11 are arranged at intervals along a predetermined direction to form a space between two lifting lug brackets for accommodating a torsion plate 12, an inner arm, an elastomer, or a corresponding connecting structure.

[0025] The torsion plate 12 is used to establish an assembly connection with a pair of lifting lugs 110 brackets. The torsion plate 12 includes a force transmission component 121 and a mounting component 122. The force transmission component 121 and the lifting lug brackets 11 can be connected by structures such as pins, bearings, and elastic bodies. The mounting component 122 is used to connect the gearbox A.

[0026] This suspension connector B needs to be assembled to high-quality components such as the rail-mounted trolley mechanism C.

[0027] To describe their different functional positions, the area on the part to be assembled that is used for the final installation of the lifting lug bracket 11 is defined as the first assembly area C1, and the area on the part to be assembled that can provide an axial positioning reference for the auxiliary tooling is defined as the second assembly area C2.

[0028] The second assembly area C2 is actually the area where the gearbox A is installed. The second assembly area C2 is equipped with a shaft portion 100 that mates with the gearbox A, such as... Figure 4 and 5 As shown. Shaft portion 100 refers to a structure that can provide an axial reference and form a coaxial fit with an axial component of an auxiliary tooling. The shaft portion can be a shaft, bushing, sleeve, or other structure with axial extension features.

[0029] The first assembly area C1 is equipped with an extension plate 200.

[0030] Back Figure 3 and Figure 4As shown, the present invention provides an auxiliary tooling 1 for simulating a gearbox A to assist in the positioning and assembly of the suspension connector.

[0031] like Figure 3 As shown, the auxiliary tooling 1 includes a base 2 and an axial member 3. The axial member 3 is disposed on the base 2 and is used to coaxially cooperate with the shaft portion 100 so that the auxiliary tooling 1 is positioned relative to the second assembly area C2, and thereby positions the torsion plate 12 connected to the base in a positioning position for cooperating with the lug bracket 11, so that the assembly position of the lug bracket 11 in the first assembly area C1 is determined by the torsion plate 12.

[0032] The base 2 is the main structure in the auxiliary tooling used to maintain the spatial positional relationship between the various positioning components and to support the torsion plate. The base 2 includes a suspension plate 4, which is detachably and fixedly connected to the mounting component 122 of the torsion plate 12 that needs to be installed, such as... Figure 4 As shown.

[0033] The suspension plate 4 can be a plate-like structure, and its dimensions can be designed according to the size of the torsion plate, the position of the mounting holes, and the required rigidity of the auxiliary tooling. Multiple mounting holes can be provided on the suspension plate 4, and the mounting component 122 of the torsion plate is connected to the suspension plate 4 via bolts or other fasteners. Due to the detachable connection, the torsion plate can be rigidly maintained on the auxiliary tooling during the positioning stage, and can be removed from the auxiliary tooling after positioning is completed.

[0034] The base 2 further includes a pair of parallel base connecting plates 5 and a reinforcing bracket 6.

[0035] Two base connecting plates 5 are spaced apart, and the suspension plates 4 are respectively connected to the ends of the two base connecting plates 5. Each of the two base connecting plates 5 is provided with an axial mounting hole 50, and the two axial mounting holes are coaxial or correspondingly set according to the installation requirements of the axial component 3. The axial component 3 passes through the two axial mounting holes in sequence, so that the axial component 3 is supported by the two base connecting plates 5.

[0036] The reinforcing bracket 6 is connected between the suspension plate 4 and a pair of base connecting plates 5, thereby forming a frame structure with high spatial rigidity, consisting of the suspension plate 4, the base connecting plates 5 and the reinforcing bracket 6.

[0037] In addition, the auxiliary tooling may also include a lifting part 7, which is mounted on the reinforcing bracket 6 and may include one or more lifting rings, lifting lugs or lifting holes.

[0038] In one specific embodiment, two M20 eye bolts can be used as lifting points 7. The eye bolts can be threaded onto the base for easy disassembly when needed. In addition to bearing the weight of the auxiliary tooling and the torsion plate, the two lifting points can also be used to adjust the slings, lifting devices, or corresponding connection positions to keep the auxiliary tooling in a suitable installation posture during the lifting process, and to assist in adjusting the horizontality, verticality, or parallelism of the torsion plate.

[0039] The axial component 3 and the shaft portion 100 are coaxially fitted. It is not required that the axial component and the shaft portion be in direct contact along the entire axial length. It is sufficient that the axial position of the axial component can be determined by using the axis of the shaft portion, thereby establishing a positioning reference for the auxiliary tooling relative to the second assembly area. For example, the coaxial fit between the axial component 3 and the shaft portion 100 can be achieved by the axial component being sleeved on the outside of the shaft portion, or by the axial component being inserted into the shaft portion, or by using a positioning sleeve to form coaxial positioning.

[0040] In one specific embodiment, the axial member 3 may include an axially extending circular tube 31 and two positioning sleeves 32 disposed inside the circular tube 31, the two positioning sleeves 32 being spaced apart along the axial direction of the circular tube 31. The circular tube 31 serves as the main load-bearing structure of the axial member 3, on the one hand supporting and maintaining the axial distance between the two positioning sleeves 32, and on the other hand connecting to the base 2 to transfer the axial positioning reference obtained from the shaft to the base 2 and the suspension plate. Each of the two positioning sleeves 32 has a through-hole along the axial direction, and the two positioning holes have a high degree of coaxiality, enabling the two positioning sleeves 32 to jointly form two positioning positions spaced apart along the axial direction.

[0041] During assembly, the shaft 100 passes through the locating inner hole of the locating sleeve 32, and the inner circumferential surface of the locating sleeve 32 is positioned and engaged with the outer circumferential surface of the shaft. Since the two locating sleeves 32 are spaced apart from each other along the axial direction, the shaft can simultaneously form two spaced radial positioning positions for the axial member 3. Compared with a single positioning position, this not only restricts the radial displacement of the axial member 3 relative to the shaft, but also reduces the possibility of the axial member 3 tilting relative to the shaft, thereby maintaining a high degree of coaxiality between the axial member 3 and the shaft, and enabling the auxiliary tooling to obtain a stable and repeatable positioning position relative to the second assembly area.

[0042] This auxiliary tooling establishes a positioning reference using the shaft portion of the second assembly area, and transfers this positioning reference to the actual torsion plate 12 via the base 2. During on-site installation, once the axial component 3 forms a coaxial fit with the shaft portion 100 of the second assembly area C2, the positions of the suspension plate 4 and the torsion plate 12 are also determined. Subsequently, by fitting the actual pair of lifting lug brackets with the torsion plate, the positions of the pair of lifting lug brackets 11 in the first assembly area C1 can be determined in reverse, based on the actual assembly dimensional relationship between the torsion plate and the lifting lug brackets.

[0043] Thus, the following positioning relationship is formed: the shaft part 100 of the part to be assembled first determines the position of the axial member 3, the axial member 3 determines the position of the suspension plate 4 through the base 2, the suspension plate 4 determines the position of the torsion plate 12, and then the torsion plate 12 determines the position of a pair of lifting lug brackets 11.

[0044] Compared to measuring multiple theoretical dimensions from the shaft to the lug bracket item by item, the above positioning method uses a real torsion plate to form the assembly dimension chain, which can reduce the measurement, conversion and tolerance accumulation of intermediate dimensions.

[0045] The following describes the usage process of this auxiliary tooling.

[0046] First, the torque plate 12 that actually needs to be installed is fixed to the suspension plate 4 of the auxiliary fixture. The torque plate 12 can be detachably fixed to the suspension plate 4 through multiple mounting holes and fasteners such as bolts. After fixing, the torque plate 12 and the auxiliary fixture 1 form a combined structure that can move as a whole, such as... Figure 5 As shown.

[0047] Subsequently, the lifting part 7 on the auxiliary tooling is connected by a crane or other lifting equipment, and the auxiliary tooling 1 and the torsion plate 12 are lifted as a whole to the vicinity of the parts to be assembled.

[0048] With the assistance of the lifting equipment, the axial component 3 of the auxiliary tooling is gradually brought closer to the shaft portion 100 of the second assembly area C2, and the axis of the axial component 3 is aligned with the axis of the shaft portion 100. The auxiliary tooling is further moved so that the axial component 3 and the shaft portion 100 form a coaxial fit. When an axial component with two positioning sleeves is used, both positioning sleeves are positioned in the corresponding positioning state with the shaft portion.

[0049] At this time, since the axial member 3 is constrained by the shaft portion 100, the position of the auxiliary tooling relative to the second assembly area C2 is determined, and the torsion plate 12 connected to the suspension plate 4 also reaches the positioning position for fitting with the lug bracket 11.

[0050] After the axial component and shaft are initially fitted together, the attitude of the auxiliary tooling and torsion plate can be further adjusted. For example, the verticality and parallelism of the auxiliary tooling or torsion plate 12 can be checked using a spirit level, and the lifting status of the lifting equipment, auxiliary fastening structures, or pressure plates can be adjusted to bring the auxiliary tooling to the designed position. By completing the main positioning through the shaft and then using verticality and parallelism adjustments for auxiliary correction, both the axial reference accuracy and overall attitude accuracy of the auxiliary tooling can be taken into account.

[0051] After the torsion plate 12 is in the positioning position, the lifting lugs 110 of a pair of lifting lug brackets 11 are respectively set in the first assembly area C1. First, the two lifting lugs 110 are respectively matched and positioned with the corresponding connection positions of the torsion plate 12, such as the connecting end 123 of the force transmission component 121 of the torsion plate 12 is inserted between the pair of lifting lugs 110.

[0052] The lugs and torsion plate 12 can be simulated to be assembled according to the connection form of the suspension connector B in subsequent actual use, so that the connection holes of the pair of lugs 110, the corresponding holes of the force transmission component 121 and other related installation structures maintain the positional relationship required by the design.

[0053] In addition, an elastic pad 300 can be installed on the underside of the mounting extension plate 200. The elastic pad 300 can be a rubber pad or other elastomer. The elastic pad is positioned at a corresponding location below the first assembly area C1 and participates in the positioning of a pair of lifting lug brackets 11 according to the final design of the suspension connector B.

[0054] Once the torsion plate 12, the pair of lifting lugs 110, and the elastic pad 300 are all fitted together as designed, the spacing between the pair of lifting lugs 110 and their relative positions in the first assembly area can be determined. A pair of lifting lugs 110 are spot-welded using a connecting plate 111 to form a lifting lug bracket 11. At this point, the lifting lug bracket 11 is separated from the extension plate 200.

[0055] like Figure 2 As shown, the connecting plate 111 is connected to a pair of lifting lugs 110 to form a lifting lug bracket 11. At this time, the lug bracket 11 has the proper spacing and relative angle between the lifting lug brackets. Even if the torsion plate and auxiliary tooling are subsequently removed, the positional relationship obtained by the positioning of the pair of lifting lug brackets can still be maintained by the bracket connecting plate.

[0056] After the lifting lug bracket 11 is formed, the corresponding connections between the auxiliary tooling 1 and the shaft 100 and the torsion plate 12 can be disconnected.

[0057] Subsequently, the lifting bracket 11 can be moved to the ground or other working positions for surface treatment such as painting and anti-corrosion.

[0058] Finally, the torsion plate 12 removed from the auxiliary tooling is connected to the surface-treated lifting lug bracket 11, so that the torsion plate 12, the lifting lug bracket 11, and related connecting structures form the suspension connector B. The formed suspension connector B is then installed onto the parts to be assembled, followed by the installation of components such as the gearbox A.

[0059] In the application of rail-mounted crane trolley mechanisms, components such as gearboxes can be installed in place in one go according to the final design.

[0060] Since the position of the lifting lug bracket has been determined by the drive shaft or other shafts, auxiliary tooling, and the actual torque plate, the torque plate, lifting lug bracket, bushing, and related bearings can have a good positional matching relationship during subsequent installation. Therefore, the original process of installing the gearbox, welding the lifting lug bracket on-site, removing the gearbox—completing welding and painting, and reinstalling the gearbox can be transformed into a process flow of using auxiliary tooling to position the lifting lug bracket, completing welding and surface treatment offline with the bracket tooling, and finally assembling it together.

[0061] The auxiliary tooling can replace the gearbox to complete the reproduction of the torsion plate position and the positioning of the lifting lug bracket. Therefore, the gearbox does not need to participate in the on-site welding process of the lifting lug bracket, which can reduce the repeated lifting and disassembly of the gearbox and reduce the risk of damage to the gearbox caused by welding operations.

[0062] In addition, the welding and surface treatment of the bracket tooling can be carried out in parallel with the preparation, assembly or other production processes of the gearbox itself, thereby reducing the waiting time between processes and helping to shorten the overall assembly cycle.

[0063] It should be understood that the "first assembly area" and "second assembly area" in this invention are mainly used to distinguish different assembly functional areas, and are not limited to their specific spatial orientation.

[0064] The detachable fixed connection in this invention can employ bolts, screws, pins, or other connection methods that allow for repeated assembly and disassembly while maintaining relative position during positioning. The fixed connection between the various plates can be achieved through welding, fastener connections, or a combination of both, depending on load-bearing requirements.

[0065] In addition to being used for the double-suspension elastic torsion arm bracket of the rail crane trolley, the auxiliary tooling of the present invention can also be used for other suspension connectors with similar assembly relationships. As long as the part to be assembled has a shaft that can provide an axial positioning reference, and the position of the actual assembled part can be determined in advance by the auxiliary tooling, and then the position of the bracket to be fixed can be determined by the actual assembled part, the positioning principle of the present invention can be adopted.

[0066] This application uses specific terms to describe embodiments of the application. Terms such as "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that references to "an embodiment," "one embodiment," or "an alternative embodiment" in different locations throughout this specification do not necessarily refer to the same embodiment. Furthermore, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0067] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any variations and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the invention, fall within the protection scope defined by the claims of the present invention.

Claims

1. An auxiliary tooling for assembling suspension connectors, characterized in that, The suspension connector includes a lug bracket and a torsion plate for connecting with the lug bracket. The suspension connector is assembled onto a component to be assembled. The component to be assembled includes a first assembly area and a second assembly area. The first assembly area is used to assemble the lug bracket, and the second assembly area is provided with a shaft portion. The auxiliary tooling includes: A base, including a suspension plate for detachably fixed connection to the torsion plate; and An axial member is disposed on the base. The axial member is used to coaxially engage with the shaft to position the auxiliary tooling relative to the second assembly area, and thereby position the torsion plate connected to the suspension plate in a positioning position for engaging with the lug bracket, so as to determine the assembly position of the lug bracket in the first assembly area by means of the torsion plate.

2. The auxiliary tooling as described in claim 1, characterized in that, The base also includes a pair of parallel connecting plates, the suspension plate is connected to the ends of the two connecting plates respectively, the two connecting plates are respectively provided with axial mounting holes, and the axial member passes through the two axial mounting holes.

3. The auxiliary tooling as described in claim 2, characterized in that, The base also includes a reinforcing bracket, which is connected between the suspension plate and the connecting plate.

4. The auxiliary tooling as described in claim 1, characterized in that, The auxiliary tooling also includes a lifting unit, which is mounted on the base and is used to connect with lifting equipment.

5. A method for assembling a suspension connector, the suspension connector comprising a lug bracket and a torsion plate for connecting with the lug bracket, the suspension connector being assembled onto a component to be assembled, the component to be assembled comprising a first assembly area and a second assembly area, the first assembly area being used to assemble the lug bracket, and the second assembly area being provided with a shaft portion, characterized in that... Using the auxiliary tooling as described in any one of claims 1-4, the assembly method includes the following steps: The torsion plate is connected to the suspension plate of the auxiliary tooling so that the torsion plate and the auxiliary tooling are connected as one unit; The axial component of the auxiliary tooling is coaxially fitted with the shaft portion, so that the auxiliary tooling is positioned relative to the second assembly area, and the torsion plate is positioned in a position that cooperates with the lifting lug bracket. The lugs of the lug bracket are engaged with the torsion plate to determine the assembly position of a pair of lugs in the first assembly area. A pair of lifting lugs are fixed with a connecting plate to form a lifting lug bracket; The torsion plate is removed from the auxiliary tooling and connected to the lifting lug bracket to form a suspension connector. The suspension connector is fixed to the first assembly area.

6. The assembly method as described in claim 5, characterized in that, Before coaxially aligning the axial component of the auxiliary tooling with the shaft, the lifting part of the auxiliary tooling is connected by a lifting device, so that the auxiliary tooling and the torsion plate are hoisted together to the second assembly area.

7. The assembly method as described in claim 5, characterized in that, After the axial component is coaxially fitted with the shaft, the posture of the auxiliary tooling is adjusted so that the torsion plate achieves a preset perpendicularity and / or parallelism.

8. The assembly method as described in claim 5, characterized in that, When the pair of said lifting lug brackets are fitted with the first assembly area, an elastic pad is fitted below the first assembly area.

9. The assembly method as described in claim 5, characterized in that, First, spot weld the connecting plate to the pair of lifting lugs, perform surface treatment, and then completely weld the connecting plate and the lifting lugs to form the lifting lug bracket.

10. The assembly method as described in claim 9, characterized in that, The surface treatment process includes applying paint.

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