Rotating shaft adjusting device for shaft system, shaft system and wind generating set

Abstract

The invention provides a rotating shaft adjusting device for a shaft system, the shaft system and a wind generating set. The shaft system comprises a rotating shaft, a bearing and a bearing seat, the central axis of the rotating shaft extends in the horizontal direction, the rotating shaft is rotatably installed on the bearing seat through the bearing, and the rotating shaft adjusting device comprises a rotating shaft position adjusting device and a rotating shaft adjusting device, the rotating shaft position adjusting device is used for being arranged between the bearing seat and a fixed ring of the bearing above or below the rotating shaft and comprises a first power loading assembly, and the first power loading assembly can apply loads to the fixed ring so as to adjust the position of the central axis of the rotating shaft. By means of the rotating shaft position adjusting device, the central axis of the rotating shaft can be kept coaxial with the central axis of the bearing seat all the time.

Description

Technical Field

[0001] The present disclosure relates to the field of rotating shaft supporting structures, and more specifically, to a shaft system and a wind turbine generator set. Background Art

[0002] Typically, the shaft is rotatably supported on the bearing seat by bearings. Due to the gravity of the shaft and the bearings, the operating conditions of the shaft, and the loads applied to the shaft by the components connected to the shaft, as the shaft rotates continuously, the rotation centerline of the shaft is easily offset relative to the expected rotation centerline (e.g., the central axis of the bearing seat), causing the shaft to be unable to be coaxially aligned with its connected components, and further causing damage to the intermediate interface components between the shaft and its connected components. This situation is particularly serious for large shafts and bearings (e.g., the main shaft and main shaft bearings of a wind turbine). Summary of the invention

[0003] Therefore, an object of the present disclosure is to provide a rotating shaft position adjustment device, a shaft system and a wind turbine generator set that can keep the central axis of the rotating shaft always coaxial with the central axis of the bearing seat.

[0004] According to one aspect of the present disclosure, a shaft adjustment device for a shaft system is provided, wherein the shaft system includes a shaft, a bearing and a bearing seat, wherein the central axis of the shaft extends in a horizontal direction and the shaft is rotatably mounted on the bearing seat via the bearing, wherein the shaft adjustment device includes: a shaft position adjustment device, which is arranged above or below the shaft and between the bearing seat and a fixed ring of the bearing, wherein the shaft position adjustment device includes a first power loading component, which can apply a load to the fixed ring to adjust the position of the central axis of the shaft.

[0005] Preferably, the rotating shaft adjustment device may further include: a bearing adjustment device, which is arranged between the bearing seat and the fixed ring of the bearing and includes a second power loading assembly, the second power loading assembly includes a fixed end and a loading end capable of moving relative to the fixed end, the fixed end and the loading end are arranged between the bearing seat and the fixed ring of the bearing along the circumferential direction of the bearing, and are used to apply a load to the bearing seat and the fixed ring along the circumferential direction, so that the two ends of the bearing adjustment device in the circumferential direction are pressed against the fixed ring and the bearing seat respectively.

[0006] According to another aspect of the present disclosure, a shaft system is provided, which includes a rotating shaft, a bearing and a bearing seat, wherein the central axis of the rotating shaft extends in a horizontal direction and the rotating shaft is rotatably mounted on the bearing seat through the bearing, and the shaft system also includes: a rotating shaft adjustment device as described above, wherein the rotating shaft position adjustment device is arranged above or below the rotating shaft and between the bearing seat and the fixed ring of the bearing.

[0007] According to another aspect of the present disclosure, a shaft system is provided, which includes a rotating shaft, a bearing and a bearing seat, the rotating shaft is rotatably mounted to the bearing seat through the bearing, and the shaft system also includes a rotating shaft adjustment device as described above, and the bearing adjustment device is installed between the fixed ring of the bearing and the bearing seat.

[0008] According to yet another aspect of the present disclosure, a wind turbine generator set is provided, comprising a generator and the shaft system as described above, wherein the rotating shaft is a main shaft of the generator.

[0009] By adopting the rotating shaft position adjustment device and the bearing system including the rotating shaft position adjustment device according to the present invention, the central axis of the rotating shaft can always be kept coaxial with the central axis of the bearing seat, thereby preventing the eccentric rotation of the rotating shaft from causing damage to the bearings, and preventing the rotating shaft from being coaxial with other connecting components from causing damage to the intermediate interface components, thereby affecting normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and other aspects, features and other advantages of the present disclosure will become clear and more easily understood through the following detailed description of exemplary embodiments in conjunction with the accompanying drawings, in which:

[0011] Figure 1 is a three-dimensional schematic diagram showing that the fixed ring of the bearing is installed in the bearing seat;

[0012] Figure 2 is a schematic cross-sectional view showing the bearing installed in the bearing seat;

[0013] Figure 3 It is shown Figure 2 An enlarged view of part I in FIG.

[0014] Figure 4 is a three-dimensional schematic diagram showing a bearing adjustment device;

[0015] Figure 5 is a perspective schematic diagram showing a protrusion formed on the outer peripheral surface of the fixed ring;

[0016] Figure 6 is a perspective schematic diagram showing a recessed portion formed in the inner peripheral surface of the bearing seat;

[0017] Figure 7 is a schematic cross-sectional view showing a bearing adjustment device;

[0018] Figure 8 It is shown Figure 2 An enlarged view of the J portion in FIG.

[0019] Fig. 9 is a three-dimensional schematic diagram showing a rotating shaft position adjustment device;

[0020] Fig.10 is a perspective schematic diagram showing a protrusion formed on the outer peripheral surface of the fixed ring;

[0021] Fig.11 is a perspective schematic diagram showing a recessed portion and a receiving groove formed in the inner peripheral surface of the bearing seat;

[0022] Fig.12 is a schematic cross-sectional view showing a rotating shaft position adjustment device;

[0023] Fig.13 2 is a schematic cross-sectional view showing a first balance adjusting portion and a second balance adjusting portion.

[0024] Description of reference numerals:

[0025] 10: bearing, 11: fixed ring, 12: moving ring, 13: roller, 14: protrusion, 141: second socket, 15: recess, 151: first socket, 16: protrusion, 17: recess, 18: receiving groove, 20: bearing seat, 21: first annular side wall, 22: second annular side wall, 30: bearing adjustment device, 30a: first bearing adjustment device, 30b: second bearing adjustment device, 30c: third bearing adjustment device, 30d: fourth bearing adjustment device, 31: second power loading assembly, 32: pressure detection device, 33: second controller, 34: second Displacement detection device, 35: first push block, 351: first lug, 352: plug block, 36: second push block, 361: second lug, 40: shaft position adjustment device, 41: middle power loading part, 43: first controller, 44a: first pressure sensor, 44b: second pressure sensor, 45a: first balance adjustment part, 451: adjustment loading part, 452: adjustment top, 453: support body, 45b: second balance adjustment part, 46: third pressure sensor, 47: support top, 471: protrusion, 472: recess, 473: plug-in protrusion, 48: base. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical concept of the present disclosure, the specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be clear that in the following description of the embodiments and the accompanying drawings, the same reference numerals are used to indicate the same or similar components, and repeated descriptions are omitted.

[0027] Figure 1 It is a three-dimensional schematic diagram showing that the fixed ring of the bearing is installed in the bearing seat, wherein the central axis of the bearing seat extends along the horizontal direction. Figure 2 It is a cross-sectional schematic diagram showing that a bearing is installed in a bearing seat, and a shaft position adjustment device and a bearing adjustment device are provided between the fixed ring of the bearing and the bearing seat. Figure 3 It is shown Figure 2 An enlarged view of part I in FIG. Figure 4 is a three-dimensional schematic diagram showing a bearing adjustment device; Figure 5 is a perspective schematic diagram showing a protrusion formed on the outer peripheral surface of the fixed ring; Figure 6 is a perspective schematic diagram showing a recessed portion formed in the inner peripheral surface of the bearing seat; Figure 7 is a schematic cross-sectional view showing a bearing adjustment device; Figure 8 It is shown Figure 2 Magnified view of section J in FIG. Fig. 9 2 is a three-dimensional schematic diagram showing a rotating shaft position adjustment device. Fig.10 1 is a perspective schematic diagram showing a protrusion formed on the outer peripheral surface of the fixed ring. Fig.11 is a perspective schematic diagram showing a recessed portion and an accommodation groove formed in the inner peripheral surface of a bearing seat. Fig.12 2 is a schematic cross-sectional view showing a rotation shaft position adjustment device. Fig.13 is a schematic cross-sectional view showing a first balance adjusting portion.

[0028] like Figure 1 and Figure 2 As shown, the shaft system includes a bearing 10, a rotating shaft (not shown) and a bearing seat 20, and the rotating shaft is rotatably mounted on the bearing seat 20 through the bearing 10. The bearing 10 includes a fixed ring 11, a movable ring 12, and a roller 13 rolling between the fixed ring 11 and the movable ring 12. The movable ring 12 is sleeved on the rotating shaft to rotate with the rotating shaft, and the fixed ring 11 is mounted on the bearing seat 20 to provide support for the rotational movement of the movable ring 12 and the rotating shaft. In an embodiment of the present disclosure, a rotating shaft adjustment device (including at least one of a bearing adjustment device 30 and a rotating shaft position adjustment device 40) is provided between the fixed ring 11 of the bearing 10 and the bearing seat 20, and it will be described in detail below with reference to the accompanying drawings.

[0029] Rotating shaft position adjustment device for shaft system

[0030] In the following description, an embodiment of the present application will be described in detail by taking the example that the rotating shaft is rotatably disposed in the bearing seat and the rotating shaft position adjustment device 40 is arranged below the rotating shaft.

[0031] like Figure 1 and Figure 2 As shown, the fixed ring 11 of the bearing 10 is mounted on the inner circumferential surface of the bearing seat 20, so that the rotating shaft is rotatably mounted inside the bearing seat 20 through the bearing. The rotating shaft adjustment device includes a rotating shaft position adjustment device 40. In the embodiment of the present disclosure, when the central axis of the rotating shaft extends in the horizontal direction, the rotating shaft position adjustment device 40 is used to be below the rotating shaft and arranged between the bearing seat 20 and the fixed ring 11. The rotating shaft position adjustment device 40 includes a first power loading component, which can apply a load to the fixed ring 11 (for example, through the support top 47 to be described later) to adjust the position of the central axis of the rotating shaft, so that the central axis of the rotating shaft can be adjusted to the originally designed center position, preventing the eccentric rotation of the rotating shaft from causing damage to the bearing, and preventing the rotating shaft from being non-coaxial with other connecting components from causing damage to the intermediate interface component, thereby affecting normal operation. For example, the position of the central axis of the rotating shaft relative to the central axis of the bearing seat 20 can be adjusted so that the central axis of the rotating shaft is coaxial or coincident with the center of the bearing seat 20.

[0032] In the embodiments of the present disclosure, Figure 2 and Fig.12 As shown, the first power loading assembly may include: a middle power loading portion 41, which is arranged vertically opposite to the central axis of the bearing seat 20 and is used to apply a load to the fixed ring 11. Specifically, referring to Figure 2 and Fig.12 , the middle power loading part 41 is located directly below the central axis of the bearing seat 20 in the vertical direction, so the middle power loading part 41 is used to apply a load to the fixed ring 11 in the vertical direction to adjust the position of the fixed ring 11 in the vertical direction, so as to adjust the position of the rotating shaft by adjusting the position of the fixed ring 11. For example, the middle power loading part 41 can be a hydraulic type, a pneumatic type or an electric type, and the load is applied to the fixed ring 11 through a corresponding driving mode to push the fixed ring 11 to move. The rotating shaft position adjustment device 40 may also include a first displacement detection device (not shown) and a first controller 43, and the first displacement detection device is used to detect the displacement of the rotating shaft or the fixed ring relative to the bearing seat 20. The first controller 43 can control the middle power loading part 41 to apply a load to the fixed ring 11 according to the detection result of the first displacement detection device to adjust the position of the rotating shaft (the adjustment process will be described in detail below). In addition, the load applied by the middle power loading part 41 to the fixed ring 11 passes through the central axis of the rotating shaft to move the rotating shaft centrifugally.

[0033] In one embodiment, the first displacement detection device can be used to detect the displacement of the central axis of the rotating shaft relative to the central axis of the bearing seat 20 in the vertical direction. For example, the first displacement detection device may include a displacement sensor. However, the embodiments of the present disclosure are not limited thereto, and the first displacement detection device may also detect displacement in other ways, such as optical detection or mechanical detection.

[0034] like Fig.12 As shown, the middle power loading portion 41 may extend a predetermined length in the horizontal direction, and may be symmetrically arranged about a vertical section passing through the central axis of the bearing seat 20. The middle power loading portion 41 may apply a vertical load to the fixed ring 11, thereby adjusting the vertical position of the central axis of the rotating shaft to a vertical position corresponding to the central axis of the bearing seat 20. However, the embodiments of the present disclosure are not limited thereto. For example, the middle power loading portion 41 may extend a predetermined length in the circumferential direction of the fixed ring 11, and may also be symmetrically arranged about a vertical section passing through the central axis of the bearing seat 20. The middle power loading portion 41 may apply a load to the fixed ring 11 along the radial direction, and may also be able to adjust the vertical position of the central axis of the rotating shaft to a vertical position corresponding to the central axis of the bearing seat 20.

[0035] In an embodiment of the present disclosure, the shaft position adjustment device 40 may further include: a first pressure sensor 44a and a second pressure sensor 44b, which are arranged on the middle power loading part 41 and spaced apart in the circumferential direction of the fixed ring 11, and are respectively used to detect the pressure of the corresponding position between the fixed ring 11 and the bearing seat 20. The first power loading assembly may also include: a first balance adjustment part 45a and a second balance adjustment part 45b, which are respectively arranged on both sides of the middle power loading part 41 in the circumferential direction of the fixed ring 11. The first controller 43 may be configured to: control at least one of the first balance adjustment part 45a and the second balance adjustment part 45b to apply a load to the fixed ring 11 according to the detection values ​​of the first pressure sensor 44a and the second pressure sensor 44b.

[0036] If the bearing 10 does not deviate in the horizontal direction, the detection value of the first pressure sensor 44a and the detection value of the second pressure sensor 44b are equal. If the bearing 10 deviates to one side in the horizontal direction (for example, under the action of the shaft system working load), the pressure on the bearing seat 20 on the side to which the bearing 10 deviates is greater than the pressure on the other side, that is, the detection value of the pressure sensor on the deviated side is greater than the detection value of the pressure sensor on the other side. By controlling at least one of the first balance adjustment part 45a and the second balance adjustment part 45b to apply a load to the fixed ring 11, the position of the central axis of the rotating shaft in the horizontal direction can be adjusted.

[0037] In addition, the first pressure sensor 44a and the second pressure sensor 44b may be arranged symmetrically about the vertical section passing through the central axis of the bearing seat 20. The first controller 43 may control at least one of the first balance adjustment part 45a and the second balance adjustment part 45b to apply a load to the fixed ring 11 along the vertical direction until the detection value of the first pressure sensor 44a and the detection value of the second pressure sensor 44b are equal when the detection value of the first pressure sensor 44a and the detection value of the second pressure sensor 44b are equal. By applying a load to the corresponding side of the fixed ring 11 by the first balance adjustment part 45a or the second balance adjustment part 45b and making the detection value of the first pressure sensor 44a and the detection value of the second pressure sensor 44b equal, the horizontal position of the central axis of the rotating shaft can be adjusted to the horizontal position corresponding to the central axis of the bearing seat 20. In addition, by arranging the first pressure sensor 44a and the second pressure sensor 44b symmetrically about the vertical section passing through the central axis of the bearing seat 20, the installation of the first pressure sensor 44a and the second pressure sensor 44b can be facilitated, and the horizontal position of the central axis of the rotating shaft can be adjusted conveniently.

[0038] like Fig.12 As shown, when the middle power loading part 41 extends along the horizontal direction, the first pressure sensor 44a and the second pressure sensor 44b can respectively detect the vertical pressure between the fixed ring 11 and the bearing seat 20, and the first balance adjustment part 45a or the second balance adjustment part 45b applies a vertical load (i.e., vertical force) to the corresponding side of the fixed ring 11.

[0039] For example, if in Figure 2 The middle bearing 10 is offset to the left, then Fig.12 The detection value of the first pressure sensor 44a located on the left side is greater than the detection value of the second pressure sensor 44b located on the right side. In this case, the first controller 43 can control the first balance adjustment part 45a to apply an upward load to the fixed ring 11, so that the left side of the fixed ring 11 is slightly lifted and the fixed ring 11 moves to the right, and finally the detection value of the first pressure sensor 44a is restored to be equal to the detection value of the second pressure sensor 44b (at this time, the first balance adjustment part 45a can stop increasing the load). At this time, the forces on the left and right sides of the bearing seat 20 are consistent, which means that the horizontal position of the center axis of the fixed ring 11 and the horizontal position of the center axis of the rotating shaft are restored to be the same as the horizontal position of the center axis of the bearing seat 20. However, the embodiments of the present disclosure are not limited to this. Figure 2In the case where the middle bearing 10 deviates to the left, the second balancing adjustment part 45b can be controlled to load downward to reduce the load, so that the right side of the fixed ring 11 moves slightly downward, and the fixed ring 11 will also move to the right at this time, and finally the second balancing adjustment part 45b can stop loading when the detection value of the first pressure sensor 44a and the detection value of the second pressure sensor 44b are equal. In addition, in the case where the bearing 10 deviates to one side, the first balancing adjustment part 45a or the second balancing adjustment part 45b can be controlled to apply a load to the corresponding side of the fixed ring 11, and finally the loading is stopped when the detection value of the first pressure sensor 44a and the detection value of the second pressure sensor 44b are equal.

[0040] The situations where the central axis of the rotating shaft is offset relative to the central axis of the bearing seat 20 may include the following three situations: vertical offset; horizontal offset; and vertical offset and horizontal offset. According to the above description, when the central axis of the rotating shaft is only vertically offset, the middle power loading part 41 can be controlled to apply a load to the fixed ring 11 according to the detection result of the first displacement detection device; when the central axis of the rotating shaft is only horizontally offset, at least one of the first balance adjustment part 45a and the second balance adjustment part 45b can be controlled to apply a vertical load to the fixed ring 11 according to the detection value of the first pressure sensor 44a and the second pressure sensor 44b; when the central axis of the rotating shaft is both vertically offset and horizontally offset, the above two situations can be combined for adjustment. Through the above adjustment, it can be ensured that the rotation center line of the rotating shaft is always coaxial with the central axis of the bearing seat 20, and at the same time, it can be ensured that the rotating shaft and its connecting parts are coaxially aligned.

[0041] However, the embodiments of the present disclosure are not limited thereto. For example, in the case where the middle power loading portion 41 extends along the circumferential direction of the fixed ring 11, the first pressure sensor 44a and the second pressure sensor 44b can respectively detect the radial pressure between the fixed ring 11 and the bearing seat 20, and the first balance adjustment portion 45a or the second balance adjustment portion 45b applies a radial centripetal load to the corresponding side of the fixed ring 11. The above description of the case where the middle power loading portion 41 extends along the horizontal direction is also applicable to this case, and therefore will not be described in detail.

[0042] In addition, the shaft position adjustment device 40 may further include: a third pressure sensor 46, which is arranged opposite to the central axis of the bearing seat 20 in the vertical direction and is used to detect the pressure between the fixed ring 11 and the bearing seat 20. The first controller 43 can record the detection values ​​received from the first pressure sensor 44a, the second pressure sensor 44b and the third pressure sensor 46 respectively, and control at least one of the middle power loading part 41, the first balance adjustment part 45a and the second balance adjustment part 45b to apply a load to the fixed ring 11 according to the detection value. For example, the first controller 43 can receive the detection values ​​from the three sensors regularly (for example, every 3 seconds). For example, the first controller 43 can process the detection values ​​of the three sensors as needed, for example, calculate the variance or average value of the detection values ​​of the three sensors. By recording the pressure values ​​of multiple positions between the fixed ring and the bearing seat in real time, more accurate shaft system operating condition data can be obtained, and these data can be used for subsequent shaft system development and design, shaft system experiments and shaft system optimization, so as to obtain a shaft system that better meets performance requirements. These data can also be used to control the shaft system, provide early warning, avoid problems and reduce the risk of losses.

[0043] The following will refer to Figure 2 as well as Figures 8 to 13 The specific structure of the rotation shaft position adjusting device 40 is described in detail.

[0044] like Figure 2 , Figure 8 and Fig.12 As shown, the rotating shaft position adjustment device 40 extends a predetermined length in the horizontal direction, and may include a housing, which includes a support top 47 and a base 48 facing each other in the vertical direction. The support top 47 is used to abut the fixed ring 11, and the base 48 is used to abut the bearing seat 20. The support top 47 and the base 48 are connected to each other in the vertical direction and a receiving cavity is defined between the support top 47 and the base 48. For example, the lower surface of the support top 47 has plug-in protrusions 473 on both sides of the horizontal direction, and the upper surface of the base 48 has corresponding plug-in grooves on both sides of the horizontal direction, and the plug-in protrusions 473 are inserted into the plug-in grooves to connect the support top 47 and the base 48 to each other, and a receiving cavity is defined between the plug-in protrusions 473. The first power loading assembly may be arranged in the receiving cavity, and a load that makes the support top 47 away from the base 48 is applied in the vertical direction to achieve the above-mentioned position adjustment function. The third pressure sensor 46, the first pressure sensor 44a and the second pressure sensor 44b are also arranged in the receiving cavity. In addition, the insertion protrusion 473 can move in the vertical direction under the guidance of the insertion groove, thereby preventing the support top 47 from shifting relative to the base 48 in the horizontal direction, thereby facilitating the loading of the first power loading assembly and improving the working accuracy of the first power loading assembly.

[0045] Specifically, Fig.12 As shown, the middle power loading part 41 can abut against the base 48 and the support top 47, and the third pressure sensor 46, the first pressure sensor 44a and the second pressure sensor 44b can be arranged between the middle power loading part 41 and the support top 47. When the middle power loading part 41 applies an upward load to make the support top 47 move upward, the third pressure sensor 46, the first pressure sensor 44a and the second pressure sensor 44b move upward together, so that the three pressure sensors are always in contact with the support top 47 to detect the vertical force of the shaft system.

[0046] The first balance adjustment part 45a and the second balance adjustment part 45b are respectively arranged on both sides of the middle power loading part 41 in the horizontal direction, and abut against the base 48 and the support top 47. In this case, even if the middle power loading part 41 applies an upward load, the first balance adjustment part 45a and the second balance adjustment part 45b will not move upward accordingly, so the fixed ring 11 can be loaded independently of the middle power loading part 41. Fig.13 As shown, the first balance adjustment part 45a may include an adjustment top 452 abutting against the support top 47, a support body 453 abutting against the base 48, and an adjustment loading part 451 arranged between the adjustment top 452 and the support body 453 in the vertical direction. The adjustment loading part 451 is similar to the middle power loading part 41 described above, and may be a hydraulic type, a pneumatic type, or an electric type, and a load is applied to the adjustment top 452 through a corresponding driving mode to finally push the fixed circle 11 to move. In addition, the second balance adjustment part 45b may have the same structure as the first balance adjustment part 45a, so it will not be repeated here.

[0047] The first controller 43 may be arranged at the center of the shaft position adjustment device 40 to facilitate communication with the detection devices and execution components at various positions. However, the embodiments of the present disclosure are not limited thereto, and the first controller 43 may also be arranged at other positions in the accommodating cavity, or may be arranged outside the shaft position adjustment device 40, as long as it can communicate with the detection devices and execution components at various positions.

[0048] Although the first displacement detection device is not shown in the drawings, the first displacement detection device may also be arranged in the accommodation space. For example, the first displacement detection device may include a displacement sensor, and the displacement sensor is disposed on the base 48 and spaced apart from the support top 47, and is used to detect the displacement of the support top 47 relative to the base 48 in the vertical direction. The vertical displacement of the support top 47 under the action of the shaft system may correspond to the displacement of the rotating shaft relative to the bearing seat 20 in the vertical direction. However, the embodiments of the present disclosure are not limited thereto, and the first displacement detection device may also be installed outside the rotating shaft position adjustment device 40 to directly detect the displacement of the rotating shaft relative to the bearing seat 20 in the vertical direction.

[0049] In addition, if Fig. 9 and Fig.10 As shown, a protrusion 471 may be provided on the top surface of the support top 47, and a corresponding notch 472 may be provided on the fixed ring 11. The cooperation between the protrusion 471 and the notch 472 facilitates accurate assembly of the components and prevents the shaft position adjustment device 40 from moving in the axial direction.

[0050] However, the embodiments of the present disclosure are not limited thereto, and the shaft position adjustment device may also extend a predetermined length along the circumferential direction of the fixed ring as a whole. In this case, the shaft position adjustment device may not include the support top 47, and the first power loading assembly abuts against the fixed ring 11 and applies a load to the fixed ring 11 along the radial direction of the bearing 10, and the load points to the central axis of the bearing 10.

[0051] Although the drawings and the above description of the present disclosure are described by taking the example that the rotating shaft is rotatably disposed in the bearing seat and the rotating shaft position adjustment device 40 is arranged below the rotating shaft, the embodiments of the present disclosure are not limited to this. For example, in the case where the rotating shaft is a hollow shaft and is sleeved on the outer periphery of the bearing seat, the rotating shaft position adjustment device 40 can be arranged above the rotating shaft between the fixed ring of the bearing and the bearing seat. For another example, even in the case where the rotating shaft is rotatably disposed in the bearing seat, the rotating shaft position adjustment device 40 can also be arranged above the rotating shaft to adjust the upward deviation of the central axis of the rotating shaft caused by the operating load of the shaft system. Similarly, in the case where the rotating shaft is sleeved on the outer periphery of the bearing seat, the rotating shaft position adjustment device can also be arranged below the rotating shaft.

[0052] Bearing adjustment device for shafting

[0053] In addition, in the embodiment of the present disclosure, the shaft adjustment device may further include a bearing adjustment device 30. Figure 1 and Figure 2 As shown, the bearing adjustment device 30 is used to be arranged between the bearing seat 20 and the fixed ring 11 of the bearing 10, and includes a second power loading component 31. The second power loading component 31 includes a fixed end and a loading end that can move relative to the fixed end. The fixed end and the loading end are used to be arranged between the bearing seat 20 and the fixed ring 11 of the bearing 10 along the circumferential direction of the bearing 10, and are used to apply a load to the bearing seat 20 and the fixed ring 11 along the circumferential direction, so that the two ends of the bearing adjustment device 30 in the circumferential direction are pressed against the fixed ring 11 and the bearing seat 20 respectively. By loading the load through the second power loading component 31, it is possible to prevent the fixed ring 11 from creeping relative to the bearing seat 20 in the circumferential direction. For example, Figure 3As shown, after the bearing adjustment device 30 is installed between the fixed ring 11 and the bearing seat 20, the second power loading assembly 31 can be extended to press the two ends of the bearing adjustment device 30 in the circumferential direction against the fixed ring 11 and the bearing seat 20 respectively, so as to fasten and assemble the fixed ring 11 and the bearing seat 20. In addition, as the shaft system runs, the load on the fixed ring 11 may increase, and the increased load may cause the fixed ring 11 to move in the circumferential direction in the direction close to the bearing seat 20 (described in detail later). By adopting such a shaft adjustment device, not only the position of the central axis of the shaft can be adjusted, but also the relative position between the shaft and the bearing seat can be adjusted in the circumferential direction, so as to achieve stable operation of the shaft system.

[0054] In some embodiments, the load is applied to the bearing seat 20 and the fixed ring 11 along the circumferential direction, and the load may be applied along the tangential direction of the fixed ring, so that the two ends of the bearing adjustment device 30 in the circumferential direction are pressed against the fixed ring 11 and the bearing seat 20 respectively.

[0055] Specifically, Figure 7 Shown and combined Figure 3 The bearing adjustment device 30 may further include a first push block 35 and a second push block 36, and the first push block 35 and the second push block 36 are respectively arranged on both sides of the second power loading assembly 31 in the circumferential direction, the first push block 35 abuts the bearing seat 20, and the second push block 36 abuts the fixed ring 11. The first push block 35 and the second push block 36 can move away from each other in the circumferential direction of the bearing 10 under the action of the second power loading assembly 31, thereby applying a load to the fixed ring 11 and the bearing seat 20. However, the embodiments of the present disclosure are not limited thereto, and the first push block 35 may also abut the fixed ring 11, and the second push block 36 abuts the bearing seat 20.

[0056] In addition, if Figure 7 As shown, the first push block 35 has an insert block 352 at one end facing the second push block 36, and the second push block 36 has a concave cavity and a plug hole that connects the concave cavity to the outside. The second power loading assembly 31 can be arranged in the concave cavity, and the insert block 352 is inserted into the plug hole and abuts against the second power loading assembly 31. In addition, the bearing adjustment device 30 can also include a pressure detection device 32 and a second controller 33. The two sides of the pressure detection device 32 in the circumferential direction respectively abut the insert block 352 and the second power loading assembly 31, and are arranged in the insert block 352 and the second power loading assembly 31. In addition, the bearing adjustment device 30 can also include a second displacement detection device 34, which can be arranged in the surface of the second push block 36 facing the first push block 35 to detect the real-time relative displacement of the first push block 35 relative to the second push block 36 in the circumferential direction. The second displacement detection device 34 can be a displacement sensor, but the second displacement detection device 34 can also have other forms, such as laser ranging.

[0057] Alternatively, if Figure 3 and Figures 5 to 7 As shown, the first push block 35 and the second push block 36 respectively have a first lug 351 and a second lug 361 , and the first lug 351 is used to be inserted into the first socket 151 formed in the bearing seat 20 , and the second lug 361 is used to be inserted into the second socket 141 formed in the fixed ring 11 .

[0058] However, the embodiments of the present disclosure are not limited thereto, and the bearing adjustment device 30 may not include the first push block 35 and the second push block 36, and the pressure detection device 32 and the second power loading assembly 31 may directly abut the fixed ring 11 and the bearing seat 20. In addition, the pressure detection device 32 may be arranged only in one of the second push block 36 and the second power loading assembly 31 and contact the other, or the pressure detection device 32 may be arranged between the first push block 35 and the bearing seat 20, between the second power loading assembly 31 and the first push block 35, or between the second push block 36 and the fixed ring 11 in the circumferential direction, as long as the pressure detection device 32 is arranged between the bearing seat 20 and the fixed ring 11 and can detect the load of the shaft system in the circumferential direction. In addition, the second displacement detection device 34 and the second controller 33 may be installed at a suitable position on the bearing seat 20 or the fixed ring 11, as long as the second displacement detection device 34 can detect the relative displacement between the bearing seat 20 and the fixed ring 11 in the circumferential direction and the second controller 33 can communicate with the detection element and the actuator.

[0059] In an embodiment of the present disclosure, the second controller 33 may be configured to: control the load applied by the second power loading assembly 31 until the load detected by the pressure detection device 32 meets the rated operating load threshold condition of the shaft system. The load detected by the pressure detection device 32 is the operating load of the shaft system during operation (hereinafter referred to as "shaft system operating load"), for example, the bearing operating load, the shaft operating load, the load of the components connected to the shaft acting on the shaft, etc. The rated operating load threshold condition of the shaft system may refer to the load range allowed for the normal operation of the shaft system, which is determined according to parameters such as bearing life during the design of the shaft system; it may also refer to a predetermined value in the above load range. By adjusting the load loaded by the second power loading assembly 31 between the fixed ring 11 and the bearing seat 20 to meet the rated operating load threshold condition of the shaft system, it is possible to ensure that the fixed ring 11 is tightened relative to the bearing seat 20 during the normal operation of the shaft system, and prevent the fixed ring 11 from rotating relative to the bearing seat 20 and causing a running circle phenomenon.

[0060] Generally, if an abnormal condition occurs in the bearing (for example, foreign matter enters the space between the fixed ring 11 and the movable ring 12 and contacts the roller 13 or the retaining cage, or the bearing lubricant is insufficiently supplied), the friction between the roller 13 and the fixed ring 11 increases, causing the shaft system operating load to increase and the force between the fixed ring 11 and the bearing seat 20 to increase. The increased shaft system operating load may exceed the rated operating load of the shaft system, or even exceed the sticking limit load of the bearing 10, causing the bearing 10 to be unable to continue to operate.

[0061] In an embodiment of the present disclosure, the second controller 33 may also be configured as: in response to the load detected by the pressure detection device 32 exceeding the rated operating load threshold of the shaft system and being lower than the jamming limit load of the bearing 10, controlling the second power loading assembly 31 to load until the load detected by the pressure detection device 32 recovers to satisfy the rated operating load threshold condition of the shaft system; in response to the load detected by the pressure detection device 32 exceeding the jamming limit load, issuing a warning signal; before the load detected by the pressure detection device 32 recovers to satisfy the rated operating load threshold condition of the shaft system, controlling the second power loading assembly 31 to load a load greater than or equal to the load detected by the pressure detection device 32.

[0062] When the shaft system operating load exceeds the jam limit load of the bearing 10, the second controller 33 sends a warning signal. In response to the warning signal, the shaft can be stopped to prevent the shaft from continuing to rotate and causing serious damage to the bearing 10.

[0063] In the case where the shaft system operating load exceeds the rated operating load threshold of the shaft system and is lower than the stuck limit load of the bearing 10, as described above, the second controller 33 controls the second power loading assembly 31 to load until the shaft system operating load is restored to meet the rated operating load threshold condition (for example, until the foreign matter leaves between the fixed ring 11 and the moving ring 12 or the foreign matter is crushed without affecting the operation of the bearing 10, or until the bearing 10 is supplied with a sufficient amount of bearing lubricant). In the process of the second power loading assembly 31 loading the load, the load loaded by the second power loading assembly 31 increases and then decreases along with the shaft system operating load (for example, in the case where the foreign matter enters the interior of the bearing and then leaves, the shaft system operating load increases and then decreases), until the load acting between the fixed ring 11 and the bearing seat 20 in the circumferential direction is restored to meet the rated operating load threshold condition. In addition, by carrying out the above-mentioned loading process, it is possible to prevent the roller 13 and the retaining frame for supporting the roller 13 from being damaged due to the increase of the friction between the roller 13 and the fixed ring 11 and / or the irregular movement of the roller 13 between the fixed ring 11 and the movable ring 12, prevent the rollers 13 from being damaged by colliding with each other, prevent the rollers 13 from damaging other components (for example, the retaining frame for supporting the roller 13), and prevent the bearing from being damaged due to continuous overload operation.

[0064] Specifically, Figure 3 Shown and combined Figure 2 and Figure 7 , the shaft rotates counterclockwise, and the fixed ring 11 pushes the bearing adjustment device 30 in the counterclockwise direction and then pushes the bearing seat 20. If the bearing has an abnormal condition and the friction between the roller 13 and the fixed ring 11 increases, the fixed ring 11 further pushes the bearing adjustment device 30 in the counterclockwise direction, causing the fixed ring 11 to further approach the bearing seat 20 in the circumferential direction. At this time, the second power loading component 31 increases the loading load, so that the fixed ring 11 moves away from the bearing seat 20 in the clockwise direction in the circumferential direction to achieve the above-mentioned loading adjustment process. In addition, before the load detected by the pressure detection device 32 returns to the rated operating load threshold condition (that is, during the loading process of the second power loading component 31), the second power loading component 31 can load a load equal to the load detected by the pressure detection device 32, so that the load loaded by the second power loading component 31 changes with the shaft system operating load. In addition, during the loading process of the second power loading assembly 31, the loading load of the power loading assembly 31 can also be greater than the load detected by the pressure detection device 32, so as to achieve a certain buffering function, thereby further preventing the roller 13 and the retainer from being damaged. Since the load loaded by the second power loading assembly 31 is greater than the load detected by the pressure detection device 32, the speed at which the fixed ring 11 approaches the bearing seat 20 can be slowed down, thereby achieving the above-mentioned buffering adjustment function.

[0065] In addition, the second controller 33 may also be configured to record the detection value of the second displacement detection device 34 as the initial displacement value when the load detected by the pressure detection device 32 meets the rated operating load threshold condition of the shaft system, and adjust the load loaded by the second power loading component 31 based on the deviation between the real-time relative displacement detected by the second displacement detection device 34 and the initial displacement value before the load detected by the pressure detection device 32 is restored to meet the rated operating load threshold condition. That is, during the loading adjustment process of the second power loading component 31, the second power loading component 31 may be loaded according to the deviation between the real-time relative displacement detected by the second displacement detection device 34 and the initial displacement value. For example, the second power loading component 31 may be loaded exponentially based on the offset. The exponential loading process may correspond to the above-mentioned buffer loading process in which the second power loading component 31 is loaded with a load greater than the detection value of the pressure detection device 32. Compared with the case where the second power loading component is proportionally loaded based on the offset, the exponential loading process may prevent the friction between the roller 13 and the fixed ring 11 from increasing and / or the roller 13 from irregularly moving between the fixed ring 11 and the moving ring 12. During the buffer loading process, when the shaft system operating load increases, the second power loading component 31 performs buffer loading based on the above-mentioned offset; when the shaft system operating load decreases, the second power loading component 31 first performs buffer loading based on the above-mentioned offset until the shaft system operating load decreases to the rated operating load, and then the second power loading component 31 stops buffer loading and loads a load equal to the rated operating load.

[0066] In addition, the second controller 33 can record the detection values ​​of the pressure detection device 32 and the second displacement detection device 34. By recording these detection values ​​in real time, more accurate shaft system operating condition data can be obtained, and these data can be used for subsequent shaft system development and design, shaft system experiments and shaft system optimization, so as to obtain a shaft system that better meets performance requirements. These data can also be used for shaft system control, early warning, avoidance of problems, and reduction of loss risks.

[0067] Shafting

[0068] The shaft system also includes the shaft adjustment device as described above, and the shaft position adjustment device 40 of the shaft adjustment device is arranged between the bearing seat 20 and the fixed ring 11 of the bearing 10 above or below the shaft.

[0069] In addition, if Figure 1 and Figure 2 As shown, a bearing accommodating hole is formed in the bearing seat 20, the bearing 10 is installed in the bearing accommodating hole, and the shaft position adjustment device 40 is arranged directly below the central axis of the shaft.

[0070] In addition, a receiving groove 18 is formed between the bearing seat 20 and the fixed ring 11 (see Fig.11 ), the shaft position adjusting device 40 can be arranged in the receiving groove 18. The size of the receiving groove 18 in the vertical direction is slightly larger than the thickness of the shaft position adjusting device 40, so as to facilitate the installation of the shaft position adjusting device 40 in the receiving groove 18.

[0071] After the shaft position adjustment device 40 is installed in the receiving groove 18, not only is there a slight gap between the top surface of the shaft position adjustment device 40 and the outer peripheral surface of the fixed ring 11, but also the center axis of the shaft may be offset downward relative to the center axis of the bearing seat 20 due to the gravity of the shaft and the load of its connecting parts. The offset of the center axis of the shaft relative to the center axis of the bearing seat 20 can be detected by an external auxiliary tool, and then the middle power loading part 41 is loaded upward so that the top surface of the support top 47 abuts against the fixed ring 11 and the center axis of the shaft corresponds to the position of the center axis of the bearing seat 20 in the vertical direction. In addition, as needed, during the installation of the shaft position adjustment device 40 and the shaft system, the detection values ​​of the first pressure sensor 44a and the second pressure sensor 44b can be adjusted to be equal through the first balance adjustment part 45a and the second balance adjustment part 45b. If the displacement sensor is disposed in the receiving cavity between the support top 47 and the base 48, then after the position of the central axis of the rotating shaft is adjusted when installing the rotating shaft position adjustment device 40, the support top 47 is spaced apart from the displacement sensor, so that the displacement sensor can detect the amount of downward displacement of the support top 47 due to the load of the shaft system, and use this as the vertical displacement of the rotating shaft. The installation process of the rotating shaft position adjustment device 40 and the shaft system can be completed in the above manner, at which time the detection value of the displacement sensor can be reset to zero or recorded as a reference value for subsequent control. In addition, during the installation process, the external auxiliary functional components can overcome the machining errors and assembly errors of the shaft system, thereby improving the installation accuracy of the shaft system.

[0072] In addition, a protrusion 16 is provided on the outer peripheral surface of the fixed ring 11 (see Fig.10 ), a corresponding recessed portion 17 is formed on the bearing seat 20 (refer to Fig.11 ), the protrusion 16 is embedded in the recess 17. The receiving groove 18 can be formed between the protrusion 16 and the recess 17. In addition, the protrusion 16 can be arranged at an angle of 90 to 120 degrees in the circumferential direction and symmetrically about the central axis of the fixed ring 11 in the circumferential direction. In addition, a recess 472 that cooperates with the projection 471 is formed directly below the protrusion 16.

[0073] In the embodiment of the present disclosure, the protrusion 16 can be used to strengthen the fixed ring 11 to prevent the lower part of the fixed ring 11 from being easily worn or even damaged due to the gravity of the shaft system and the operating load of the shaft system. In addition, the protrusion 16 has a first side wall and a second side wall abutting against the bearing seat 20 in the circumferential direction, thereby preventing the fixed ring 11 from creeping relative to the bearing seat 20 in the circumferential direction and avoiding running and wear between the fixed ring 11 and the bearing seat 20.

[0074] In addition, the shaft position adjustment device of the shaft system may also include the above-mentioned bearing adjustment device 30. In this case, the bearing adjustment device 30 is installed between the fixed ring 11 of the bearing 10 and the bearing seat 20. The specific structure of the shaft position adjustment device including the bearing adjustment device 30 installed between the bearing seat 20 and the fixed ring 11 will be described in detail below.

[0075] One of the two surfaces of the bearing seat 20 and the fixed ring 11 facing each other in the radial direction has a protrusion 14 protruding in the radial direction, and the other has a recess 15 corresponding to the protrusion 14. After the fixed ring 11 and the bearing seat 20 are fastened and assembled, the protrusion 14 and the recess 15 contact each other in the radial direction to prevent the fixed ring 11 from moving relative to the bearing seat 20 in the radial direction. An installation groove is formed between the protrusion 14 and the recess 15 in the circumferential direction. The bearing adjustment device 30 is installed in the installation groove.

[0076] In addition, the mounting groove has a first annular side wall 21 and a second annular side wall 22 in the annular direction, one of which is formed on the fixed ring 11 and the other is formed on the bearing seat 20. The bearing adjustment device 30 is arranged between the first annular side wall 21 and the second annular side wall 22 along the annular direction, and loads a thrust force along the annular direction that causes the fixed ring 11 and the bearing seat 20 to move relatively away from each other.

[0077] like Figure 5 and Figure 6 As shown, the protrusion 14 is formed on the outer peripheral surface of the fixed ring 11, and the recess 15 is formed on the inner peripheral surface of the bearing seat 20. The first annular side wall 21 is formed on the fixed ring 11 (more specifically, the protrusion 14 on the outer peripheral surface of the fixed ring 11), and the second annular side wall 22 is formed on the bearing seat 20 (more specifically, the recess 15 in the inner peripheral surface of the bearing seat 20).

[0078] In addition, a plurality of mounting grooves as described above may be provided between the bearing seat 20 and the fixed ring 11, and a plurality of bearing adjustment devices 30 are respectively disposed in the plurality of mounting grooves. The loading end of at least one of the plurality of bearing adjustment devices 30 is loaded in the opposite direction to the loading ends of the other bearing adjustment devices 30.

[0079] Specifically, Figure 2 As shown, four mounting grooves (i.e., a first mounting groove, a second mounting groove, a third mounting groove, and a fourth mounting groove) are provided between the bearing seat 20 and the fixed ring 11, and a first bearing adjustment device 30a, a second bearing adjustment device 30b, a third bearing adjustment device 30c, and a fourth bearing adjustment device 30d are provided in the first mounting groove, the second mounting groove, the third mounting groove, and the fourth mounting groove, respectively. The four mounting grooves are evenly distributed along the circumferential direction.

[0080] Specifically, Figure 1 and Figure 2 As shown, the bearing seat 20 has a bearing mounting hole, and the bearing 10 is mounted in the bearing mounting hole. When the central axis of the bearing 10 extends in the horizontal direction, a protrusion 16 is provided on the outer circumferential surface of the fixed ring 11, and the protrusion 16 is located directly below the central axis of the bearing 10. A corresponding recess 17 is formed on the bearing seat 20, and the protrusion 16 is embedded in the recess 17. The angle of the protrusion 16 in the circumferential direction is 90 degrees to 120 degrees, and the protrusion 16 is symmetrically arranged about the central axis of the fixed ring 11 in the circumferential direction. The protrusion 16 can be used to strengthen the fixed ring 11 to prevent the lower part of the fixed ring 11 from being easily worn or even damaged due to the gravity of the shaft system and the operating load of the shaft system.

[0081] exist Figure 2 In the embodiment, the two protrusions 14 located at the upper part have a wedge shape and thus have only one circumferential side wall in the circumferential direction. Accordingly, each of the second mounting groove and the third mounting groove located at the upper part may be formed between one protrusion 14 and one recess 15. Figure 2 In the embodiment, the protruding portion 16 located at the lower portion has two annular side walls opposite to each other in the annular direction, so each of the first mounting groove and the fourth mounting groove located at the lower portion can be formed between the protruding portion 16 and the recessed portion 17. Wherein, in the case where the first annular side wall 21 is formed on the fixed ring 11 (more specifically, formed on the protrusion 14 and the protruding portion 16), the first annular side wall 21 of the fourth mounting groove accommodating the fourth bearing adjustment device 30d faces the opposite direction to the first annular side walls 21 of the remaining mounting grooves. Specifically, the first annular side wall 21 of the fourth mounting groove accommodating the fourth bearing adjustment device 30d faces the clockwise direction, while the first annular side walls 21 of the remaining mounting grooves face the counterclockwise direction.

[0082] After the first to fourth bearing adjustment devices 30a to 30d are installed in the first to fourth installation grooves, respectively, the second power loading assembly 31 of each of the first to third bearing adjustment devices 30a to 30c can be extended to press the two ends of the bearing adjustment device in the circumferential direction against the fixed ring 11 and the bearing seat 20, respectively, so as to pre-tighten and assemble the fixed ring 11 and the bearing seat 20. At this time, the second power loading assembly 31 of the fourth bearing adjustment device 30d located in the fourth installation groove can load a load equal to the rated operating load of the shaft system.

[0083] When the shaft rotates counterclockwise, the moving ring 12 of the bearing 10 rotates counterclockwise therewith, and the fixed ring 11 has a tendency to rotate counterclockwise under the rotation load of the shaft and the moving ring 12, so the first annular side wall 21 of the first installation groove to the third installation groove applies a pushing force to the bearing seat 20 through the first bearing adjustment device 30a, the second bearing adjustment device 30b and the third bearing adjustment device 30c respectively. In addition, when the bearing operating load exceeds the rated operating load of the shaft system and is lower than the stuck limit load of the bearing 10, the fourth bearing adjustment device 30d may not participate in the buffer adjustment, but continuously load a load equal to the rated operating load of the shaft system.

[0084] In addition, the fourth bearing adjustment device 30d can play a role when the bearing 10 (or the fixed ring 11) is removed from the bearing seat 20. When the bearing 10 (or the fixed ring 11) is removed, the second power loading assembly 31 of each of the first bearing adjustment device 30a, the second bearing adjustment device 30b and the third bearing adjustment device 30c stops loading, and the fourth bearing adjustment device 30d can be loaded in the circumferential direction, so that the fourth bearing adjustment device 30d pushes the circumferential side wall of the protrusion 16 in the counterclockwise direction. Since the two protrusions 14 located at the upper part have a wedge shape and the first bearing adjustment device 30a, the second bearing adjustment device 30b and the third bearing adjustment device 30c are not loaded, the fixed ring 11 can be rotated in the counterclockwise direction so that the wedge-shaped protrusion 14 moves to a position spaced apart from the recess 15 in the radial direction (such as Figure 3 and Figure 6 As shown, a portion of the recess 15 has a shape matching the wedge-shaped protrusion 14, and the other portion has a shape matching the substantially rectangular parallelepiped bearing adjustment device 30. Once the wedge-shaped protrusion 14 moves to the position of the other portion of the recess 15, the surface of the protrusion 14 in the radial direction is spaced apart from the other portion of the recess 15), thereby loosening the fixed ring 11 relative to the bearing seat 20 to facilitate removal of the fixed ring 11 or the bearing 10 from the bearing seat 20.

[0085] In addition, when the shaft rotates clockwise, only the first annular side wall 21 of one of the plurality of mounting grooves faces counterclockwise, while the first annular side walls 21 of the remaining mounting grooves all face clockwise. The above description of the mounting groove and the bearing adjustment device is also applicable to this case, so it will not be repeated here.

[0086] However, the embodiments of the present disclosure are not limited thereto, and more mounting grooves are provided between the bearing seat 20 and the fixed ring 11, and a bearing adjustment device 30 is provided in each mounting groove. In addition, the number of bearing adjustment devices 30 for disassembling the fixed ring 11 may be two or more, but less than the number of bearing adjustment devices 30 for tightening the fixed ring 11 and the bearing seat 20. In addition, the third mounting groove and the fourth mounting groove may also be formed by a wedge-shaped protrusion and a recess, and the wedge-shaped protrusion used to form the third mounting groove and the fourth mounting groove may be integrally formed with the local rear portion or spaced apart from each other. In addition, the mounting grooves may be unevenly distributed in the circumferential direction. For example, in the case where foreign matter enters the interior of the bearing and affects the operation of the bearing, the foreign matter may move downward due to gravity, and therefore, the lower part of the bearing is more likely to get stuck, and thus dense bearing adjustment devices may be provided at the lower part of the fixed ring 11.

[0087] Wind turbines

[0088] According to another aspect of the present disclosure, a wind turbine generator set is provided, comprising a generator and the shaft system as described above, wherein the rotating shaft in the shaft system is the main shaft of the generator. For example, both ends of the main shaft of the generator can be supported by the shaft system.

[0089] By adopting the shaft position adjustment device and the shaft system including the shaft position adjustment device according to the present disclosure, the central axis of the shaft can always be kept coaxial with the central axis of the bearing seat, thereby preventing the eccentric rotation of the shaft from causing damage to the bearing, and preventing the shaft from being out of axiality with other connecting parts from causing damage to the intermediate interface parts, thereby affecting normal operation. In addition, by recording the pressure values ​​of multiple positions between the fixed ring and the bearing seat in real time, more accurate shaft system operating condition data can be obtained, and these data can be used for subsequent shaft system development and design, shaft system experiments and shaft system optimization, so as to obtain a shaft system that better meets performance requirements; at the same time, these data can also be used for shaft system control, early warning, avoid problems, and reduce loss risks. In addition, the protrusion is provided on the outer peripheral surface of the fixed ring, which can not only prevent the lower part of the fixed ring from being worn or even damaged due to the gravity of the shaft system and the operating condition load of the shaft system, but also prevent the running circle between the fixed ring and the bearing seat from causing bearing wear. In addition, when the shaft adjustment device includes a shaft position adjustment device and a bearing adjustment device, the shaft adjustment device can not only adjust the position of the central axis of the shaft, but also adjust the relative position between the shaft and the bearing seat along the circumferential direction, thereby achieving stable operation of the shaft system.

[0090] The specific implementation methods of the present disclosure 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 spirit of the present disclosure whose scope is defined by the claims (for example, different technical features of the present disclosure can be combined to obtain new technical solutions). These combinations, modifications and improvements should also be within the scope of protection of the present disclosure.

Claims

1. A shaft adjustment device for a shaft system, the shaft system comprising a shaft, a bearing (10) and a bearing seat (20), wherein the central axis of the shaft extends in a horizontal direction and the shaft is rotatably mounted on the bearing seat (20) through the bearing (10), characterized in that: The rotating shaft adjustment device comprises: a rotating shaft position adjustment device (40) for being arranged between the bearing seat (20) and the fixed ring (11) of the bearing (10) above or below the rotating shaft, and the rotating shaft position adjustment device (40) comprises a first power loading component, and the first power loading component can apply a load to the fixed ring (11) to adjust the position of the central axis of the rotating shaft.

2. The shaft adjustment device for a shaft system according to claim 1, characterized in that: The first power loading assembly comprises: a middle power loading portion (41) arranged vertically opposite to the central axis of the bearing seat (20) and used to apply a load to the fixed ring (11); and The rotating shaft position adjustment device (40) further comprises: A first displacement detection device, used for detecting the displacement of the rotating shaft or the fixed ring (11) relative to the bearing seat (20); The first controller (43) controls the middle power loading part (41) to apply a load to the fixed ring (11) according to the detection result of the first displacement detection device.

3. The shaft adjustment device for a shaft system according to claim 2, characterized in that: The shaft position adjustment device (40) further comprises: a first pressure sensor (44a) and a second pressure sensor (44b), which are arranged on the middle power loading portion (41) and are spaced apart in the circumferential direction of the fixed ring (11), and are respectively used to detect the pressure at corresponding positions between the fixed ring (11) and the bearing seat (20); and The first power loading assembly also includes: The first balance adjustment part (45a) and the second balance adjustment part (45b) are respectively arranged on both sides of the middle power loading part (41) in the circumferential direction. The first controller (43) is configured to control at least one of the first balance adjustment part (45a) and the second balance adjustment part (45b) to apply a load to the fixed ring (11) according to the detection values ​​of the first pressure sensor (44a) and the second pressure sensor (44b).

4. The shaft adjustment device according to claim 3, characterized in that: The first pressure sensor (44a) and the second pressure sensor (44b) are arranged symmetrically about a vertical section passing through the central axis of the bearing seat (20), and the first controller (43) can control at least one of the first balance adjustment part (45a) and the second balance adjustment part (45b) to apply a load to the fixed ring (11) when the detection value of the first pressure sensor (44a) and the detection value of the second pressure sensor (44b) are not equal, until the detection value of the first pressure sensor (44a) and the detection value of the second pressure sensor (44b) are equal.

5. The rotating shaft adjustment device according to claim 3, characterized in that: The shaft position adjustment device (40) further comprises: a third pressure sensor (46) arranged vertically opposite to the central axis of the bearing seat (20) and used to detect the pressure between the fixed ring (11) and the bearing seat (20). The first controller (43) is configured to record the detection values ​​received from the first pressure sensor (44a), the second pressure sensor (44b) and the third pressure sensor (46) respectively, and control at least one of the middle power loading part (41), the first balance adjustment part (45a) and the second balance adjustment part (45b) to apply a load to the fixed ring (11) according to the detection values.

6. The rotating shaft adjustment device according to any one of claims 2 to 5, characterized in that: The middle power loading portion (41) extends a predetermined length in the circumferential direction of the fixed ring (11) or in the horizontal direction, and the middle power loading portion (41) is arranged symmetrically with respect to a vertical section passing through the central axis of the bearing seat (20).

7. The rotating shaft adjustment device according to any one of claims 3 to 5, characterized in that: The rotating shaft position adjustment device (40) extends a predetermined length in the horizontal direction, and the rotating shaft position adjustment device (40) further comprises a housing, the housing comprising a support top (47) and a base (48) facing each other in the vertical direction, the support top (47) being used to abut against the fixed ring (11), and the base (48) being used to abut against the bearing seat (20), the support top (47) and the base (48) being connected to each other in the vertical direction and defining a receiving cavity between the support top (47) and the base (48), The first power loading assembly is arranged in the accommodating cavity, and applies a load in the vertical direction to move the supporting top (47) away from the base (48).

8. The shaft adjustment device according to claim 7, characterized in that: The first pressure sensor (44a) and the second pressure sensor (44b) are arranged between the middle power loading part (41) and the supporting top (47).

9. The rotating shaft adjustment device according to any one of claims 1 to 5, characterized in that: The rotating shaft position adjustment device (40) extends a predetermined length in the circumferential direction of the fixed ring (11). The first power loading assembly is used to abut against the fixed ring (11) and apply a load to the fixed ring (11) along the radial direction of the bearing (10).

10. The rotating shaft adjustment device according to claim 7, characterized in that: The first displacement detection device comprises a displacement sensor, which is arranged on the base (48) and spaced apart from the support top (47) and is used to detect the displacement of the support top (47) relative to the base (48) in the vertical direction.

11. The rotating shaft adjustment device according to any one of claims 1 to 5, characterized in that: The shaft adjustment device also includes: a bearing adjustment device (30) for being arranged between the bearing seat (20) and the fixed ring (11) of the bearing (10) and including a second power loading component (31), the second power loading component (31) including a fixed end and a loading end capable of moving relative to the fixed end, the fixed end and the loading end being arranged between the bearing seat (20) and the fixed ring (11) of the bearing (10) along the circumferential direction of the bearing (10), and being used to apply a load to the bearing seat (20) and the fixed ring (11) along the circumferential direction, so that the two ends of the bearing adjustment device (30) in the circumferential direction are pressed against the fixed ring (11) and the bearing seat (20) respectively.

12. The rotating shaft adjustment device according to claim 11, characterized in that: The bearing adjustment device (30) further comprises: a first push block (35) and a second push block (36), which are respectively arranged on both sides of the second power loading assembly (31) in the circumferential direction; the first push block (35) can abut against one of the bearing seat (20) and the fixed ring (11); the second push block (36) can abut against the other of the bearing seat (20) and the fixed ring (11); the first push block (35) and the second push block (36) can move away from each other in the circumferential direction of the bearing (10) under the action of the second power loading assembly (31), thereby applying a load to the fixed ring (11) and the bearing seat (20).

13. The rotating shaft adjustment device according to claim 12, characterized in that: The bearing adjustment device (30) further comprises: a pressure detection device (32), arranged between the bearing seat (20) and the fixed ring (11) or between the first push block (35) and the second power loading assembly (31), and used for detecting the load of the shaft system in the circumferential direction during the rotation of the moving ring (12) of the bearing (10); The second controller (33) is configured to control the load applied by the second power loading assembly (31) until the load detected by the pressure detection device (32) meets the rated operating load threshold condition of the shaft system.

14. The rotating shaft adjustment device according to claim 13, characterized in that: The second controller (33) is further configured to: In response to the load detected by the pressure detection device (32) exceeding the rated operating load threshold and being lower than the jamming limit load of the bearing (10), the second power loading assembly (31) is controlled to load until the load detected by the pressure detection device (32) recovers to meet the rated operating load threshold condition.

15. The rotating shaft adjustment device according to claim 13, characterized in that: The second controller (33) is further configured to: In response to the load detected by the pressure detection device (32) exceeding the jam limit load, a warning signal is issued.

16. The rotating shaft adjustment device according to claim 14, characterized in that: The second controller (33) is also configured to control the second power loading component (31) to load a load greater than or equal to the load detected by the pressure detection device (32) before the load detected by the pressure detection device (32) meets the rated operating load threshold condition.

17. The rotating shaft adjustment device according to claim 13, characterized in that: The bearing adjustment device (30) further comprises a second displacement detection device (34), wherein the second displacement detection device (34) is used to detect the real-time relative displacement between the bearing seat (20) and the fixed ring (11) in the circumferential direction. The second controller (33) is further configured to record the detection value of the second displacement detection device (34) as the initial displacement value when the load detected by the pressure detection device (32) satisfies the rated operating load threshold condition, and to adjust the load loaded by the second power loading component (31) based on the deviation between the real-time relative displacement detected by the second displacement detection device (34) and the initial displacement value before the load detected by the pressure detection device (32) recovers to satisfy the rated operating load threshold condition.

18. The rotating shaft adjustment device according to claim 12, characterized in that: The first push block (35) has an insert block (352) at one end facing the second push block (36), and the second push block (36) has a concave cavity and a plug hole that connects the concave cavity with the outside, wherein the second power loading component (31) is arranged in the concave cavity, and the insert block (352) is inserted into the plug hole and abuts against the second power loading component (31).

19. The rotating shaft adjustment device according to claim 12, characterized in that: The first push block (35) and the second push block (36) respectively have a first lug (351) and a second lug (361), and the first lug (351) is used to be inserted into a first socket (151) formed in the bearing seat (20), and the second lug (361) is used to be inserted into a second socket (141) formed in the fixed ring (11).

20. A shaft system, comprising a rotating shaft, a bearing (10) and a bearing seat (20), wherein the central axis of the rotating shaft extends in a horizontal direction and the rotating shaft is rotatably mounted on the bearing seat (20) through the bearing (10), characterized in that: The shaft system further comprises: a shaft adjustment device as claimed in any one of claims 1 to 19, wherein the shaft position adjustment device (40) is arranged above or below the shaft, between the bearing seat (20) and the fixed ring (11) of the bearing (10).

21. The shaft system according to claim 20, characterized in that A bearing accommodating hole is formed in the bearing seat (20), the bearing (10) is installed in the bearing accommodating hole, and the rotating shaft position adjustment device (40) is arranged directly below the central axis of the rotating shaft.

22. The shaft system according to claim 20 or 21, characterized in that: An accommodating groove (18) is formed between the bearing seat (20) and the fixed ring (11), and the rotating shaft position adjustment device (40) is arranged in the accommodating groove (18).

23. The shaft system according to claim 22, characterized in that A protrusion (16) is provided on the outer peripheral surface of the fixed ring (11), a corresponding recess (17) is formed on the bearing seat (20), and the protrusion (16) is embedded in the recess (17). Wherein, the receiving groove (18) is formed between the protruding portion (16) and the recessed portion (17).

24. The shaft system according to claim 23, characterized in that The protrusions (16) have an angle of 90 to 120 degrees in the circumferential direction and are symmetrically arranged about the central axis of the fixed ring (11) in the circumferential direction.

25. A shaft system, comprising a rotating shaft, a bearing (10) and a bearing seat (20), wherein the rotating shaft is rotatably mounted to the bearing seat (20) via the bearing (10), characterized in that: The shaft system further comprises a shaft adjustment device as claimed in any one of claims 11 to 19, wherein the bearing adjustment device (30) is installed between the fixed ring (11) of the bearing (10) and the bearing seat (20).

26. The shaft system according to claim 25, characterized in that One of the two surfaces of the bearing seat (20) and the fixed ring (11) facing each other in the radial direction has a protrusion (14) protruding along the radial direction, and the other has a recess (15) corresponding to the protrusion (14), wherein a mounting groove is formed between the protrusion (14) and the recess (15) in the circumferential direction, and the bearing adjustment device (30) is installed in the mounting groove.

27. The shaft system according to claim 26, characterized in that The mounting groove has a first annular side wall (21) and a second annular side wall (22) in the annular direction, one of the first annular side wall (21) and the second annular side wall (22) being formed on the fixed ring (11) and the other being formed on the bearing seat (20), The bearing adjustment device (30) is arranged between the first annular side wall (21) and the second annular side wall (22) along the annular direction, and is loaded with a thrust force along the annular direction to move the fixed ring (11) and the bearing seat (20) away from each other.

28. The shaft system according to claim 26, characterized in that One of the two surfaces of the bearing seat (20) and the fixed ring (11) facing each other in the radial direction has a plurality of protrusions (14) protruding along the radial direction, and the other has a plurality of recesses (15) corresponding to the plurality of protrusions (14), and each of the plurality of mounting grooves is formed between the corresponding protrusions (14) and the recesses (15), and the plurality of bearing adjustment devices (30) are respectively installed in the plurality of mounting grooves.

29. The shaft system according to claim 28, characterized in that In the circumferential direction of the shaft system, the loading end of at least one bearing adjustment device (30) among the plurality of bearing adjustment devices (30) loads in the opposite direction to the loading ends of the other bearing adjustment devices (30).

30. A wind turbine generator set, characterized in that: The wind turbine generator set comprises a generator and a shaft system according to any one of claims 20 to 29, wherein the rotating shaft is a main shaft of the generator.

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