Centering tool and shafting assembling tool

Abstract

The utility model provides a centering tooling and shafting assembly tooling, the centering tooling is used for shafting assembly of a wind generating set, the shafting comprises a main shaft and a bearing seat sleeved on the periphery of the main shaft, the centering tooling comprises a base body, the base body comprises a supporting seat, and the supporting seat is used for supporting the main shaft. The supporting seat is used for being detachably connected with the end surface of one of the bearing seat and the main shaft; the rolling wheel assembly is arranged on the side, away from the supporting seat, of the base body and comprises a rolling wheel, and the rolling wheel is used for making tangent contact with the circumferential surface, facing the bearing seat, of the other one of the bearing seat and the main shaft; and the connecting component is used for connecting the roller assembly to the base body and is constructed to be capable of adjusting the distance between the roller assembly and the supporting seat. According to the centering tool disclosed by the utility model, the coaxiality of components in shafting assembly can be simply and quickly adjusted, the centering tool can be suitable for shafting of different models or sizes, and the process cost of centering can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wind generating set shafting assembly, in particular to a centering tool and shafting assembly tool. BACKGROUND

[0002] With the development of wind power industry, the capacity of wind generating set is continuously enlarged, which puts forward higher requirements on the bearing capacity of shafting. The shafting of wind generating set mainly includes a main shaft, a bearing seat and a bearing. The bearing is arranged between the main shaft and the bearing seat in the radial direction to realize the rotational connection of the main shaft and the bearing seat, and usually includes a front bearing and a rear bearing.

[0003] During the shafting assembly, the bearing seat needs to be sleeved on the main shaft, and the bearing seat and the main shaft are positioned on the installation surface parallel to the ground in the assembly workshop in the axial direction of the vertical direction. The bearing is hoisted above the bearing seat and the main shaft, arranged coaxially with the bearing seat and the main shaft, and then continuously lowered and assembled in the bearing seat.

[0004] However, during the shafting assembly, the center of gravity of the bearing seat and the center of gravity of the main shaft may deviate, so that after the bearing seat is sleeved on the main shaft and the front bearing is installed, the assembly position of the rear bearing cannot be guaranteed coaxial, and it is also difficult to achieve the coaxiality required by the process after the turning. At present, the center of gravity of the bearing seat is usually adjusted by adding counterweights, and the center of gravity of the bearing seat and the center of gravity of the main shaft are coaxial by turning, so as to ensure the coaxiality of the assembly position of the rear bearing. However, such a way is time-consuming and laborious, and is not easy to control, and has problems such as inconvenient operation, difficult control and inaccurate centering. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a centering tool and shafting assembly tool, which can simply and quickly adjust the coaxiality of the components in the shafting assembly, can be applicable to shaftings of different models or different sizes, and can reduce the process cost of centering.

[0006] According to an aspect of the utility model, a centering tool is provided, which is used for the shafting assembly of a wind generating set. The shafting includes a main shaft and a bearing seat sleeved on the outer periphery of the main shaft. The centering tool includes a base body including a support seat for detachable connection with the end surface of one of the bearing seat and the main shaft; a roller assembly provided on the side of the base body away from the support seat and including a roller for tangential contact with the circumferential surface of the other of the bearing seat and the main shaft facing the one; and a connecting member connecting the roller assembly to the base body and configured to adjust the distance between the roller assembly and the support seat.

[0007] Preferably, the tonifying tool can further include a locking member configured to lock the connecting member with respect to the base.

[0008] Preferably, the connecting member can include an adjusting screw rod including a screwing portion and a first connecting portion connected to the screwing portion, and an adjusting push rod including a roller mounting portion and a second connecting portion connected to the roller mounting portion, the first connecting portion being threadedly connected with the second connecting portion such that the adjusting push rod moves with respect to the adjusting screw rod in an axial direction of the adjusting screw rod when the screwing portion is turned.

[0009] Preferably, the base can further include a cover disposed above the support seat and having a cavity, and the first connecting portion of the adjusting screw rod and the second connecting portion of the adjusting push rod can be located inside the cavity, and the screwing portion of the adjusting screw rod can extend outside the cavity.

[0010] Preferably, an outer circumferential surface of the screwing portion can have a groove extending in a circumferential direction of the screwing portion, and an end of the base in which the support seat is disposed can have a flange extending toward the groove, wherein the flange can extend into the groove and can prevent the groove from moving in the axial direction.

[0011] Preferably, a side of the cover opposite to the support seat can have a through hole, and the locking member can be configured to pass through the through hole to abut against the adjusting push rod.

[0012] Preferably, the support seat can include a planar extension portion to be installed against an end surface of the one of the bearing seat and the main shaft in a radial direction of the one of the bearing seat and the main shaft, and a curved portion curved from the planar extension portion to abut against a circumferential surface of the one of the bearing seat and the main shaft in the length direction.

[0013] Preferably, the roller assembly can further include a support shaft to support the roller, the roller being rotatable with respect to the support shaft.

[0014] Preferably, the roller can include a first roller and a second roller, the roller assembly can further include first and second support shafts to support the first and second rollers, respectively, and the roller mounting portion can include first and second roller mounting portions extending from the second connecting portion toward both sides in a direction perpendicular to an axial direction of the second connecting portion, and the first and second support shafts can be connected to the first and second roller mounting portions, respectively.

[0015] According to another aspect of the present application, a shafting assembly tool for a wind turbine generator is provided, wherein the shafting assembly tool comprises at least three centering tools as described above.

[0016] Preferably, the shafting assembly tool can comprise three centering tools, which are mounted to be equally spaced apart from each other in a circumferential direction on an end surface of the one of the main shaft and the bearing seat.

[0017] According to the centering tool and the shafting assembly tool provided by the present application, the coaxiality of the components in the shafting assembly can be simply and quickly adjusted by the roller assembly and the adjustable connecting member, which can be applicable to shaftings of different models or different sizes, and can reduce the process cost of centering and shafting assembly. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects and features of the present application will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a schematic perspective view of a centering tool according to a first embodiment of the present application.

[0020] Figure 2 is a schematic perspective view of a centering tool according to a second embodiment of the present application.

[0021] Figure 3 is a sectional view showing the centering tool in Figure 2 .

[0022] Figure 4 is a top view showing the centering tool in Figure 2 .

[0023] Figure 5 is a schematic view showing an assembly of the centering tool according to an embodiment of the present application.

[0024] Figure 6 is a schematic view showing an assembly of the centering tool according to another embodiment of the present application.

[0025] LIST OF REFERENCE NUMERALS

[0026] 10, 10'- centering tool; 20 - main shaft; 30 - bearing seat

[0027] 110 - base body; 111 - support seat; 1111 - planar extension; 1112 - curved portion; 112 - cover; 1121 - flange

[0028] 120 - roller assembly; 121 - roller; 121A - first roller; 121B - second roller; 122 - support shaft; 122A - first support shaft; 122B - second support shaft;

[0029] 130 - connecting member; 131 - adjusting screw rod; 1311 - screwing part; 1312 - first connecting part; 132 - adjusting push rod; 1321 - roller mounting part; 1321A - first roller mounting part; 1321B - second roller mounting part; 1322 - second connecting part;

[0030] 140 - locking member;

[0031] C - cavity; G - groove; H - through hole. DETAILED DESCRIPTION

[0032] For those skilled in the art to better understand the technical concept of the present application, the specific embodiments of the present application will be described clearly, completely and in detail below in combination with the drawings. It should be clear that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description of the present application merely for the purpose of describing a specific embodiment thereof is not intended to limit the present application. For those skilled in the art, the specific meaning of the terms used in the present application can be understood according to the specific circumstances.

[0034] It will be understood that, although terms such as "first", "second", etc. can be used herein to describe various elements, these elements will not be limited by these terms. Rather, these terms are only used to distinguish one element from another. Therefore, the first element referred to in the exemplary embodiments described herein can also be referred to as the second element without departing from the teachings of the exemplary embodiments.

[0035] For ease of description, the "inner", "outer", "upper", "lower" referred to below are consistent with the inner, outer, upper and lower directions of the drawings themselves, but do not limit the structure of the present application.

[0036] Also, throughout the specification, when an element is described as being "on" another element, "connected to" another element, or "coupled to" another element, it can be directly on, directly connected to, or directly coupled to the other element or one or more other elements can be interposed therebetween.

[0037] In the shafting assembly process, the center of gravity of the bearing seat and the center of gravity of the main shaft can be offset, so that after the bearing seat is sleeved on the outer periphery of the main shaft and the front bearing is installed, the assembly position of the rear bearing cannot be guaranteed to be coaxial, and it is also difficult to achieve the coaxiality required by the process after the disc is rotated. At present, the center of gravity of the bearing seat is usually adjusted by adding counterweights, and the center of gravity of the bearing seat is made coaxial with the center of gravity of the main shaft through disc rotation. However, such a way is time-consuming and laborious, and is not easy to control, and there are problems such as inconvenient operation, not easy to control, and inaccurate adjustment.

[0038] In addition, with the large-scale and multi-model design and development of wind generating sets, the eccentricity of the shafting of different models of wind generating sets is inconsistent, so it is difficult to standardize the counterweight. Therefore, in the traditional way of adjusting the coaxiality, for the shafting of different models of wind generating sets, the counterweight and disc rotation need to be adjusted repeatedly, resulting in further increase of time cost and labor cost.

[0039] The utility model aims at overcoming the above-mentioned shortcomings, that is, solving the problem of difficult adjustment of the coaxiality of the components of the shafting assembly. Specifically, the utility model aims to provide an adjustment centering tool which can simply and quickly adjust the coaxiality of the components of the shafting and is suitable for the shafting assembly of different models of wind generating sets, and an shafting assembly tool comprising the adjustment centering tool.

[0040] In the following, the adjustment centering tool and the shafting assembly tool according to the utility model will be described in detail. Figures 1 to 6 The adjustment centering tool and the shafting assembly tool according to the utility model will be described in detail.

[0041] Figure 1 is a schematic perspective view of the adjustment centering tool according to the first embodiment of the utility model, Figure 2 is a schematic perspective view of the adjustment centering tool according to the second embodiment of the utility model, Figure 3 is a sectional view showing the adjustment centering tool in Figure 2 is a sectional view showing the adjustment centering tool in Figure 4 is a sectional view showing the adjustment centering tool in Figure 2 is a top view showing the adjustment centering tool in Figure 5 is a schematic view showing the assembly of the adjustment centering tool according to an embodiment of the utility model, and Figure 6 is a schematic view showing the assembly of the adjustment centering tool according to another embodiment of the utility model.

[0042] The adjustment centering tool according to the utility model is suitable for the shafting of a wind generating set, such asFigure 5 and Figure 6 As shown in FIGS. 1 and 2, the shafting can include a main shaft 20 and a bearing housing 30 fitted on the outer periphery of the main shaft 20.

[0043] As shown in FIGS. 1 and 2, the shafting can include a main shaft 20 and a bearing housing 30 fitted on the outer periphery of the main shaft 20. Figure 1 and Figure 2 As shown in FIGS. 1 and 2, the shafting can include a main shaft 20 and a bearing housing 30 fitted on the outer periphery of the main shaft 20.

[0044] As shown in FIGS. 1 and 2, the shafting can include a main shaft 20 and a bearing housing 30 fitted on the outer periphery of the main shaft 20.

[0045] As shown in FIGS. 1 and 2, the shafting can include a main shaft 20 and a bearing housing 30 fitted on the outer periphery of the main shaft 20. Figures 2 to 4 As shown in FIGS. 1 and 2, the shafting can include a main shaft 20 and a bearing housing 30 fitted on the outer periphery of the main shaft 20.

[0046] The cover 112 can be provided above the support seat 111. The cover 112 can have a hexahedral shape with both ends open in the length direction, and have a cavity C. More specifically, the cover 112 can include a top wall, a bottom wall, and two side walls connecting the top wall and the bottom wall, and the cavity C can pass through the cover 112 in the length direction of the cover 112. In addition, the cover 112 can further include a flange 1121 which will be described later.

[0047] As an example, the cover 112 and the support seat 111 are independent components from each other and can be combined with each other by a method such as welding, but are not limited thereto, for example, the cover 112 and the support seat 111 can be one piece.

[0048] As shown in FIGS. 1 and 2, the shafting can include a main shaft 20 and a bearing housing 30 fitted on the outer periphery of the main shaft 20. Figures 2 to 5 As shown in FIGS. 1 and 2, the shafting can include a main shaft 20 and a bearing housing 30 fitted on the outer periphery of the main shaft 20.

[0049] The following description uses the example of a detachable connection between the support base 111 and the end surface of the bearing housing 30. It should be understood that the following description can be similarly applied to the case where the support base 111 and the end surface of the spindle 20 are detachably connected.

[0050] Because of the bend 1112, when the support 111 is mounted on the end surface of the bearing housing 30, the centering tool 10 is prevented from moving radially relative to the bearing housing 30, thereby ensuring reliable mounting of the centering tool 10 on the bearing housing 30. Preferably, the side surface of the bend 1112 that abuts against the bearing housing 30 has a curved surface to better fit the circumferential inner surface of the bearing housing 30, thereby more reliably preventing the centering tool 10 from moving radially relative to the bearing housing 30.

[0051] Additionally, the planar extension 1111 may extend on a horizontal plane relative to the cover 112 in a direction perpendicular to the length direction of the cover 112, thereby improving the bonding strength of the support 111 relative to the mounting end surface. Furthermore, although not shown, the support 111 may have a positioning hole to accurately mount the support 111 onto the bearing housing 30 via a positioning pin.

[0052] The roller assembly 120 may be disposed at the opposite end of the base 110 and may include a roller 121 and a support shaft 122 for supporting the roller 121. The roller 121 may be configured to rotate relative to the support shaft 122. The roller 121 may be used to make tangential contact with the circumferential surface of the other of the bearing housing 30 and the spindle 20. Preferably, the roller 121 may be used to make tangential contact with the circumferential surface of the spindle 20 facing the bearing housing 30, that is, the roller 121 may be used to make tangential contact with the outer circumferential surface of the spindle 20.

[0053] like Figure 1 As shown, in the first embodiment, the roller assembly 120 may include a single roller 121 and a single support shaft 122. Optionally, as... Figure 2 As shown, in the second embodiment, the roller assembly 120 may include a first roller 121A and a second roller 121B. Correspondingly, the roller assembly 120 may include a first support shaft 122A for supporting the first roller 121A and a second support shaft 122B for supporting the second roller 121B. That is, in the second embodiment, the roller 121 may include the first roller 121A and the second roller 121B, and the support shaft 122 may include the first support shaft 122A and the second support shaft 122B. Compared to the first embodiment, using the roller assembly 120 according to the second embodiment can prevent load concentration, thereby improving the load capacity of the centering fixture 10.

[0054] like Figure 3As shown, the connecting member 130 connects the roller assembly 120 to the base 110 and is configured to adjust the distance between the roller assembly 120 and the support 111. The connecting member 130 can pass through the cavity C of the base 110 in the longitudinal direction of the cover 112.

[0055] More specifically, the connecting member 130 may include an adjusting rod 131 and an adjusting push rod 132 that are threadedly connected to each other. The adjusting rod 131 may include a turning portion 1311 and a first connecting portion 1312 connected to the turning portion 1311. The adjusting push rod 132 may include a roller mounting portion 1321 and a second connecting portion 1322 connected to the roller mounting portion 1321.

[0056] The first connecting portion 1312 can be threadedly connected to the second connecting portion 1322, such that when the turning portion 1311 of the adjusting rod 131 is rotated, the adjusting push rod 132 can move relative to the adjusting rod 131 in the axial direction of the adjusting rod (131). As an example, the first connecting portion 1312 may have an external thread, and the second connecting portion 1322 may have an internal thread, such that the first connecting portion 1312 can be inserted into the second connecting portion 1322 for threaded connection. In this case, the adjusting rod 131 can be, for example, an adjusting bolt, but is not limited thereto. As another example, the first connecting portion 1312 may have an internal thread, and the second connecting portion 1322 may have an external thread, such that the second connecting portion 1322 can be inserted into the first connecting portion 1312 for threaded connection.

[0057] The first connecting portion 1312 of the adjusting rod 131 and the second connecting portion 1322 of the adjusting push rod 132 can be disposed inside the cavity C of the base 110. The screwing portion 1311 of the adjusting rod 131 extends outside the cavity C to facilitate rotation of the screwing portion 1311, thereby facilitating the adjustment of the distance between the roller assembly 120 and the support base 111.

[0058] like Figure 3 As shown, the outer peripheral surface of the screwing portion 1311 of the adjusting lever 131 may have a groove G, which extends in the circumferential direction of the screwing portion 1311. A flange 1121 is formed at one end of the base 110 and protrudes toward the adjusting lever 131. Specifically, the flange 1121 may be provided at one end of the mounting support 111 of the base 110. In addition, the flange 1121 may extend into the groove G to prevent the groove G from moving in the axial direction (or the length direction of the cover 112). Therefore, the adjusting lever 131 can be prevented from falling off the base 110.

[0059] In the second embodiment, as Figures 2 to 4As shown, the roller mounting portion 1321 of the adjustment push rod 132 can include a first roller mounting portion 1321A and a second roller mounting portion 1321B extending from the second connecting portion 1322 toward both sides in a direction perpendicular to the length direction (i.e., the axial direction of the second connecting portion 1322), and the first support shaft 122A and the second support shaft 122B are connected to the first roller mounting portion 1321A and the second roller mounting portion 1321B, respectively.

[0060] As shown in Figure 2 and Figure 3 The locking member 140 can be configured to lock the connecting member 130 relative to the base body 110. More specifically, the side of the cover 112 opposite to the support seat 111 has a through hole H, and the locking member 140 can be configured to pass through the through hole H to abut against the adjustment push rod 132, thereby fixing the adjustment push rod 132. As an example, the locking member 140 is a locking wheel, but is not limited thereto.

[0061] In order to facilitate the understanding of the centering tool 10 and 10' according to the embodiments of the present application, the following refers to Figure 5 and Figure 6 The process of centering the bearing seat 30 by using the centering tool 10 and 10' according to the present application is described.

[0062] As shown in Figure 5 First, the centering tool 10' according to the second embodiment is installed on the end surface of the bearing seat 30. Specifically, the support seats 111 of the four centering tools 10' are installed on the end surface of the bearing seat 30 by connecting members (such as bolts, etc.), and the roller assemblies 120 are in tangential contact with the circumferential outer surface of the main shaft 20 in the radial direction. As an example, one centering tool 10' is installed on each of the left and right sides of the 12 o'clock direction of the bearing seat 30 shown in Figure 5 , one centering tool 10' is installed in the 4 o'clock direction and the 8 o'clock direction, but the number and arrangement of the centering tools 10' are not limited to Figure 5 shown in

[0063] Then, the bearing housing 30 is rotated (i.e., run-in), and then the coaxiality between the main shaft 20 and the rear bearing is measured. Here, the coaxiality between the main shaft 20 and the rear bearing can be obtained by measuring the distance (i.e., the perpendicular distance) in the axial direction between the end surface of the main shaft 20 and the end surface of the outer ring of the rear bearing, which is assembled before the bearing housing 30 is sleeved. Then, according to the measured result, it is determined which direction of the centering tool 10' needs to be adjusted. After adjusting the adjusting screw 131 of the centering tool 10' at the corresponding position, the coaxiality between the main shaft 20 and the rear bearing is measured again until the measured coaxiality reaches the process requirement. In other words, the centering tool according to the present application can ensure the coaxiality by adjusting the gap between the bearing housing 30 and the main shaft 20 in the opposite direction.

[0064] Specifically, after the centering tool 10' is installed, the distance in the axial direction between the end surface of the outer ring of the rear bearing and the end surface of the main shaft 20 is measured at multiple points in the circumferential direction on the end surface of the main shaft 20, and then the adjusting screw 131 of the centering tool 10' is adjusted so that the distance difference (i.e., the height difference) between the multiple points is less than a predetermined value (e.g., 0.5 mm), and then the bearing housing 30 is rotated, i.e., run-in. After the bearing housing 30 is rotated for a predetermined number of revolutions, the distance in the axial direction between the end surface of the outer ring of the rear bearing and the end surface of the main shaft 20 at the multiple points is measured again and the height difference at the multiple points is calculated.

[0065] As an example, the height difference can be obtained by selecting a number of points (e.g., 8 points equally spaced from each other) in the circumferential direction on the end surface of the main shaft 20, measuring the distance in the axial direction between the end surface of the main shaft 20 and the end surface of the outer ring of the rear bearing at each point, and then calculating the difference between the maximum distance and the minimum distance measured as the height difference. Alternatively, the average value of the distances at the points can be calculated, and the difference between the distance at each point and the average value is calculated as the height difference. Here, the average value of the distances measured at the points can be used to calculate the negative pressure size of the end cover. The closer the distances measured at the multiple points (i.e., the smaller the height difference of the multiple points), the better the coaxiality adjustment, and the more accurate the final calculation value.

[0066] If the height difference exceeds the predetermined value, the centering tool 10' that needs to be adjusted is determined according to the distances measured at the points, and then the bearing housing 30 is rotated again for a predetermined number of revolutions, and the height difference is measured again. Then, according to the result of the second measurement, the centering tool 10' that needs to be adjusted is determined until the measured height difference reaches the process requirement. Conversely, if the height difference measured for the first time does not exceed the predetermined value, the height difference between the end surface of the outer ring of the rear bearing and the end surface of the main shaft 20 is measured after the run-in according to the process requirement.

[0067] As Figure 6As shown, in addition to installing the three supporting seats 111 of the centering tool 10 according to the first embodiment on the main shaft 20 and making the roller assembly 120 in tangential contact with the circumferential inner surface of the bearing seat 30 in the radial direction, the centering manner of the shafting can be similar to that described in the first embodiment, and thus the repeated description will be omitted. Figure 5 In the embodiment shown, the main shaft 20 can be joggled. Figure 6

[0068] In the above manner, the coaxiality of the main shaft 20 and the rear bearing during the shafting assembly process can be effectively ensured, and the difference between the vertical distance between the end surface of the main shaft 20 and the end surface of the outer ring of the rear bearing at each position in the circumferential direction is reduced. In addition, counterweights are not required, and thus the time cost and labor cost required for assembly can be reduced.

[0069] According to the present application, the shafting assembly tool can include three centering tools 10 and 10'. In this case, the three centering tools 10 and 10' can be installed to be equidistantly spaced apart from each other in the circumferential direction on the end surface of one of the main shaft 20 and the bearing seat 30. That is, the three centering tools 10 and 10' can be spaced apart from each other by 120 degrees in the circumferential direction. However, the present application is not limited thereto, and for example, as shown in Figure 5 the shafting assembly tool can include four centering tools 10'.

[0070] In the present application, the shafting assembly tool can include at least three centering tools 10 and 10' according to eccentricity and component size and other factors. The shafting assembly tool can include the centering tool 10 according to the first embodiment and / or the centering tool 10' according to the second embodiment. In addition, the number of the centering tools 10 and 10' can be increased at a position where the eccentricity is large. Alternatively, the number and arrangement position of the centering tools 10 and 10' can be adjusted according to actual use.

[0071] In addition, after measuring the vertical distance between the end surface of the main shaft 20 and the end surface of the outer ring of the rear bearing, the centering tools 10 and 10' of the present application can not be disassembled, but can be used to support the bearing seat 30 or the main shaft 20, so as to facilitate the transfer of the shafting to other stations, thereby reducing the occupancy time of the assembly station.

[0072] As described above, the centering tool according to the present application can adjust the gap between the main shaft and the bearing seat through the connecting member, that is, the coaxiality of the components during the shafting assembly can be simply and quickly adjusted, so as to ensure the measurement accuracy. The centering tool according to the present application can also be applicable to shaftings of different models or different sizes, and can reduce the process cost of centering and shafting assembly.

[0073] ​In addition, the centering tool can reduce the time and frequency of turning, and can ensure smooth and stable turning process, so that the centering process can be simplified and the assembly efficiency can be improved.

[0074] In addition, the shafting assembly tool can improve the efficiency of shafting assembly and reduce the cost of assembly.

[0075] The specific embodiments of the present application are described in detail above, although some embodiments have been shown and described, those skilled in the art should understand that these embodiments can be combined, modified and improved without departing from the principles and spirits of the present application limited by the claims, for example, different technical features of the present application can be combined to obtain new technical solutions. These combinations, modifications and improvements should also be within the scope of protection of the present application.

Claims

1. A centering fixture for assembling the shaft system of a wind turbine generator set, the shaft system comprising a main shaft (20) and a bearing housing (30) fitted around the outer periphery of the main shaft (20), characterized in that, The centering fixture includes: The base (110) includes a support (111) for detachably connecting to the end surface of one of the bearing housing (30) and the spindle (20); A roller assembly (120) is disposed on the side of the base (110) away from the support (111) and includes a roller (121) for tangential contact with the circumferential surface of the other of the bearing housing (30) and the spindle (20) toward the other; and A connecting member (130) connects the roller assembly (120) to the base (110) and is configured to adjust the distance between the roller assembly (120) and the support (111).

2. The centering tooling according to claim 1, characterized in that, The centering fixture also includes a locking member (140) configured to lock the connecting member (130) relative to the base (110).

3. The centering fixture according to claim 2, characterized in that, The connecting member (130) includes: The adjusting lever (131) includes a turning part (1311) and a first connecting part (1312) connected to the turning part (1311); and The adjusting push rod (132) includes a roller mounting portion (1321) and a second connecting portion (1322) connected to the roller mounting portion (1321). The first connecting portion (1312) is threadedly connected to the second connecting portion (1322) such that when the screwing portion (1311) is rotated, the adjusting push rod (132) moves relative to the adjusting screw rod (131) in the axial direction of the adjusting screw rod (131).

4. The centering tooling according to claim 3, characterized in that, The base (110) further includes a cover (112) disposed above the support (111) and having a cavity (C). The first connecting part (1312) of the adjusting rod (131) and the second connecting part (1322) of the adjusting push rod (132) are located inside the cavity (C), and the turning part (1311) of the adjusting rod (131) extends to the outside of the cavity (C).

5. The centering fixture according to claim 4, characterized in that, The outer peripheral surface of the screwing part (1311) has a groove (G) that extends in the circumferential direction of the screwing part (1311). The base (110) is provided with a flange (1121) at one end of the support (111) extending toward the groove (G), wherein the flange (1121) extends into the groove (G) and prevents the groove (G) from moving in the axial direction.

6. The centering tooling according to claim 4, characterized in that, The cover (112) has a through hole (H) on the side opposite to the support (111), and The locking member (140) is configured to pass through the through hole (H) to abut against the adjusting push rod (132).

7. The centering tooling according to any one of claims 1 to 6, characterized in that, The support base (111) includes: A planar extension (1111) for mounting against the end surface of one of the bearing housing (30) and the spindle (20); and The curved portion (1112), which bends from the planar extension (1111), is used to abut against the circumferential surface of the bearing housing (30) and the main shaft (20) in the radial direction of the bearing housing (30) and the main shaft (20).

8. The centering tooling according to any one of claims 1 to 6, characterized in that, The roller assembly (120) further includes a support shaft (122) for supporting the roller (121), the roller (121) rotating relative to the support shaft (122).

9. The centering tooling according to claim 3, characterized in that, The roller (121) includes a first roller (121A) and a second roller (121B), and the roller assembly (120) further includes two first support shafts (122A) and a second support shaft (122B) respectively for supporting the first roller (121A) and the second roller (121B), and The roller mounting portion (1321) includes a first roller mounting portion (1321A) and a second roller mounting portion (1321B) extending from the second connecting portion (1322) in a direction perpendicular to the axial direction of the second connecting portion (1322) toward both sides, and the first support shaft (122A) and the second support shaft (122B) are respectively connected to the first roller mounting portion (1321A) and the second roller mounting portion (1321B).

10. A shaft assembly fixture for a wind turbine generator set, characterized in that, The shaft assembly fixture includes at least three centering fixtures according to any one of claims 1 to 9.

11. The shaft assembly fixture for wind turbine generator sets according to claim 10, characterized in that, The shaft assembly fixture includes three centering fixtures, which are installed to be circumferentially spaced apart from each other on the end surfaces of one of the spindle (20) and the bearing housing (30).

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