Rotating Machinery

Abstract

To provide a rotary machine that can be stably operated.SOLUTION: A rotary machine includes a fixed shaft extending in an axial direction, a bearing that is externally fitted to the fixed shaft, a power generator motor having a rotor that is disposed on the fixed shaft in a relatively rotatable manner via the bearing, a rotary body that is disposed in a relatively rotatable manner with respect to the fixed shaft, and a transmission member that can transmit torque between the rotor and the rotary body. The rotor includes an inner ring fixed to the bearing, an outer ring surrounding the inner ring from the outer circumferential side, and a plurality of radial direction members that radially connect the inner ring and the outer ring, and that are disposed at intervals in the circumferential direction. The transmission member is connected to the radial direction members in the rotor.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to rotary machines. [Background technology]

[0002] For example, generators built into wind power generators and other large machines use an annular rotor and stator that are arranged around a stationary shaft. The rotor rotates around the shaft via bearings. In the case of a wind turbine, the torque generated by the rotor head, which is fitted with blades, is transmitted to the generator via a coupling mechanism.

[0003] A known example of this type of coupling mechanism is described in Patent Document 1. In the device described in Patent Document 1, an elastic member is provided in the coupling mechanism that connects the rotor head and the generator. This allows the elastic member to absorb axial or radial displacement of the rotor caused by external forces, as well as tilt of the rotor relative to its axis. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] U.S. Patent No. 8,994,205 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when a large external force is applied, the amount of displacement or tilt of the rotor due to the displacement of the rotor head exceeds the elastic deformation limit of the elastic member, resulting in unnecessary transmission of external forces other than torque between the rotor and rotor head, which may hinder stable operation of the device.

[0006] The present disclosure has been made to solve the above-mentioned problems, and has an object to provide a rotating machine that can be operated more stably. [Means for solving the problem]

[0007] In order to solve the above problem, the rotary machine of the present disclosure comprises a fixed shaft extending in an axial direction, a bearing fitted onto the fixed shaft, a generator motor having a rotor rotatable relative to the fixed shaft via the bearing, a rotating body rotatable relative to the fixed shaft and spaced apart from the generator motor in the axial direction, and a transmission member capable of transmitting torque between the rotor and the rotating body, wherein the rotor has an inner ring fixed to the bearing, an outer ring surrounding the inner ring from the outer periphery, and a plurality of radial members radially connecting the inner ring and the outer ring and spaced apart circumferentially, and the transmission member is connected to the radial members on the rotor.

[0008] A rotary machine according to the present disclosure includes a fixed shaft extending in an axial direction, a bearing fitted to the fixed shaft, a generator motor having a rotor rotatable relative to the fixed shaft via the bearing, a rotating body rotatable relative to the fixed shaft and spaced apart from the generator motor in the axial direction, and a transmission member capable of transmitting torque between the rotor and the rotating body, wherein the rotor includes an inner ring fixed to the bearing, an outer ring surrounding the inner ring from an outer periphery side, and a transmission member connecting the inner ring and the outer ring in a radial direction. the rotor includes a plurality of radial members spaced apart in the circumferential direction, and a filling member that fills the gaps between pairs of circumferentially adjacent radial members, the transmission member being connected to the radial members on the rotor, and the radial members having holes formed therein that penetrate the radial members in the axial direction, and the transmission member having a cylindrical body portion centered on the axis, and a plurality of pins that protrude in the axial direction from an end face of the cylindrical body portion on the rotor side and are spaced apart in the circumferential direction, and are each inserted into the holes. [Effects of the Invention]

[0009] According to the present disclosure, it is possible to provide a rotary machine that can be operated more stably. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a cross-sectional view showing a configuration of a rotary machine according to a first embodiment of the present disclosure. [Figure 2] 1 is a view of a rotor according to a first embodiment of the present disclosure viewed from the axial direction. [Figure 3] FIG. 4 is a cross-sectional view showing a configuration of a rotary machine according to a second embodiment of the present disclosure. [Figure 4] FIG. 10 is a view of a transmission member according to a second embodiment of the present disclosure, as viewed from the axial direction. [Figure 5] FIG. 10 is an enlarged view of a pin and hole according to a second embodiment of the present disclosure. [Figure 6] FIG. 10 is an enlarged cross-sectional view of a pin and a swing retainer according to a third embodiment of the present disclosure. [Figure 7] FIG. 10 is an enlarged cross-sectional view showing a modified example of a pin and a swing holding portion according to the third embodiment of the present disclosure. [Figure 8] FIG. 10 is a diagram illustrating a modified example of a rotor according to a third embodiment of the present disclosure. [Figure 9] FIG. 10 is a diagram showing a first modified example of a rotor common to each embodiment of the present disclosure. [Figure 10] FIG. 10 is a diagram showing a second modified example of a rotor common to each embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0011] First Embodiment (Configuration of rotating machines) A rotary machine 1 according to a first embodiment of the present disclosure will be described below with reference to Fig. 1 and Fig. 2. This rotary machine 1 is applied to, for example, a wind turbine for wind power generation or a generator / motor for marine machinery. As shown in Fig. 1, the rotary machine 1 includes a fixed shaft 10, a bearing 20, a generator motor 30, a rotating body 40, and a transmission member 50.

[0012] The fixed shaft 10 extends in the direction of the axis O and has a columnar shape centered on the axis O. The fixed shaft 10 is fixed to a floor or another device (not shown) so as to be unrotatable and unmovable. A plurality of bearings 20 are fitted onto the outer circumferential surface of the fixed shaft 10. Of these bearings 20, a pair of bearings 20 arranged on one side in the direction of the axis O are provided to rotatably support a rotor 31 of a generator motor 30 (described later) around the axis O. A pair of bearings 20 arranged on the other side in the direction of the axis O are provided to rotatably support a rotating body 40. All of these bearings 20 are journal bearings for supporting radial loads. The four bearings 20 are arranged at intervals in the direction of the axis O.

[0013] The generator motor 30 has a rotor 31 and a stator 32. The rotor 31 is supported by the bearing 20 described above so as to be rotatable relative to the fixed shaft 10 around the axis O. The rotor 31 has an inner ring 33, an outer ring 34, a disk member 35, and a radial member 36. The inner ring 33 has a first inner ring 33a and a second inner ring 33b. The first inner ring 33a and the second inner ring 33b are cylindrical and centered on the axis O. The first inner ring 33a and the second inner ring 33b are arranged at intervals in the direction of the axis O. The inner circumferential surfaces of the first inner ring 33a and the second inner ring 33b are fixed to the outer ring of the bearing 20. The first inner ring 33a is located on one side of the second inner ring 33b in the direction of the axis O.

[0014] The outer ring 34 has a cylindrical shape centered on the axis O and surrounds the inner rings 33 from the outer periphery. Permanent magnets 37 are built into the outer ring 34. Although not shown in detail, a plurality of permanent magnets 37 are arranged at intervals in the circumferential direction of the axis O or in contact with each other in the circumferential direction.

[0015] The disk member 35 connects the first inner ring 33a and the edge of the outer ring 34 on one side in the direction of the axis O. The disk member 35 has an annular shape centered on the axis O. In other words, the space between the first inner ring 33a and the outer ring 34 is blocked by the disk member 35 over the entire circumferential and radial directions. The disk member 35 is provided to bear the centrifugal force acting on the outer ring 34 when the rotor 31 rotates.

[0016] The radial direction members 36 connect the second inner ring 33b and the edge of the outer ring 34 on the other side in the direction of the axis O. As shown in FIG. 2, the radial direction members 36 extend radially outward from the outer peripheral surface of the second inner ring 33b, and a plurality of radial direction members 36 (eight, for example) are provided at intervals in the circumferential direction. In other words, a fan-shaped gap is formed between a pair of radial direction members 36 adjacent in the circumferential direction. The circumferential dimension (i.e., thickness) of the radial direction members 36 is constant throughout the entire radial direction.

[0017] The stator 32 has a cylindrical shape centered on the axis O, and covers the rotor 31 from the outer periphery with a gap therebetween. The stator 32 has a plurality of coils 38. When the rotor 31 rotates, an induced electromotive force is generated between the permanent magnets 37 of the rotor 31 and the coils 38. By extracting this induced electromotive force to the outside, the generator motor 30 functions as a power generating device. Conversely, by supplying a current to the coils 38, an electromagnetic force is generated between the coils 38 and the permanent magnets 37 of the rotor 31. This electromagnetic force drives the rotor 31 to rotate around the axis O. In other words, in this case, the generator motor 30 functions as a driving force source.

[0018] 1, the rotating body 40 is provided at a position spaced apart from the generator motor 30 in the direction of the axis O. In the case of a wind turbine for wind power generation, for example, the rotating body 40 is a rotor head to which blades for catching wind are attached. The rotating body 40 is supported on the outer peripheral surface of the fixed shaft 10 by the other pair of bearings 20 on the direction of the axis O so as to be rotatable around the axis O.

[0019] The transmission member 50 connects the rotor 31 and the rotating body 40 in a state in which torque can be transmitted between them. The transmission member 50 has a cylindrical portion 51 and a flange portion 52. The cylindrical portion 51 has a cylindrical shape centered on the axis O. The cylindrical portion 51 has larger inner and outer diameters than the fixed shaft 10. In other words, the fixed shaft 10 is covered from the outer periphery by the cylindrical portion 51. The radial dimension of the cylindrical portion 51 is constant throughout the entire area in the direction of the axis O.

[0020] The flange portion 52 is integrally formed on one end of the cylindrical portion 51 in the direction of the axis O. The flange portion 52 has an annular shape that protrudes radially outward from the outer circumferential surface of the cylindrical portion 51. The flange portion 52 is fixed to each of the radial members 36 of the rotor 31 by fastening members such as bolts and nuts (not shown). Furthermore, although not shown in detail, the other end of the transmission member 50 in the direction of the axis O is fixed to the rotating body 40 so as not to rotate relative to the rotating body 40. This enables torque to be transmitted between the rotor 31 and the rotating body 40.

[0021] (Action and effect) Next, the operation of the rotating machine 1 will be described. For example, in the case of a wind turbine for wind power generation, rotational energy is imparted to a rotor head serving as a rotating body 40 via blades that capture wind power, causing the rotating body 40 to rotate about an axis O. Torque associated with this rotation is transmitted to the rotor 31 of the generator motor 30 through the transmission member 50. Specifically, the torque is transmitted to the radial member 36 of the rotor 31 via the cylindrical portion 51 and flange portion 52 of the transmission member 50. As a result, the rotor 31 is driven to rotate about the axis O in the same direction as the rotating body 40. As the rotor 31 rotates, an induced electromotive force is generated between the stator 32 and the permanent magnets 37. This power can be extracted to the outside to generate wind power.

[0022] Incidentally, in the case of a rotary machine 1 such as a wind turbine, external forces other than torque about the axis O may be applied to the rotor head serving as the rotating body 40 as a result of changes in wind direction and wind speed. For example, these may be forces in the direction of the axis O, forces in the radial direction, or forces that tilt the rotating body 40 relative to the axis O. If these external forces are transmitted to the rotor 31, stable rotation of the rotor 31 will be hindered, affecting the power generation capacity. Therefore, the present embodiment employs the above-described configurations.

[0023] According to the above configuration, when an external force other than torque is applied to the rotor 40, causing displacement in the axial direction (O) or radial direction or tilt with respect to the axial direction (O), the displacement is first transmitted to the radial members 36 by the transmission members 50. Because the radial members 36 extend radially relative to the axis O, they can withstand torque around the axis O but are flexible against forces in the axial direction (O) and radial direction. In other words, the rigidity of the radial members 36 is low against forces in these directions. Therefore, when an external force other than torque is applied, the radial members 36 deflect preferentially. When the external force is released, the deflection is eliminated by the elastic restoring force of the radial members 36. In this way, the radial members 36 can absorb inadvertent displacement of the rotor 40. As a result, transmission of external force components other than torque to the rotor 31 can be prevented. This enables the generator motor 30 to continue operating more smoothly and stably.

[0024] Furthermore, the above-described effects can be obtained simply by applying the above-described radial members 36 to a portion of the rotor 31. In other words, a structure that can resist the above-described external forces can be realized without increasing the number of parts. This makes it possible to avoid an increase in the size of the device and also to reduce manufacturing and maintenance costs.

[0025] Furthermore, with the above configuration, the annular flange portion 52 centered on the axis O is fixed to the radial member 36, and the cylindrical body portion 51 is connected to the rotating body 40. This allows torque about the axis O to be transmitted efficiently between the rotor 31 and the rotating body 40 without any loss. On the other hand, if the transmission member 50 is not cylindrical but is formed of multiple rods spaced apart in the circumferential direction, there is a possibility that the torque may cause deformation of the member, hindering efficient transmission of torque. With the above configuration, it is possible to significantly reduce such a possibility.

[0026] The first embodiment of the present disclosure has been described above. Various changes and modifications can be made to the above configuration without departing from the spirit and scope of the present disclosure. For example, the number and positions of the bearings 20 are not limited to those of the first embodiment and may be determined appropriately depending on the design and specifications. In the first embodiment, the outer ring 34 and the first inner ring 33a are connected by the disk members 35. However, radial members 36 can be used instead of the disk members 35 as long as they can resist centrifugal force. That is, in this case, the first inner ring 33a and the second inner ring 33b are connected to the outer ring 34 by the radial members 36. Even with this configuration, the same effects as those described above can be obtained.

[0027] Second Embodiment Next, a second embodiment of the present disclosure will be described with reference to Fig. 3 to Fig. 5. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. As shown in Fig. 3, a rotary machine 101 according to this embodiment differs from the first embodiment mainly in the configuration of a transmission member 150.

[0028] The transmission member 150 has a cylindrical portion 51 and a plurality of pins 53. The cylindrical portion 51 has a configuration similar to that of the first embodiment. The pins 53 protrude in the axial direction O from one end face of the cylindrical portion 51 in the axial direction O. As shown in FIG. 4, a plurality of pins 53 (eight, for example) are provided at intervals in the circumferential direction about the axis O. The pins 53 have a circular cross-sectional shape when viewed from the axial direction O. Furthermore, the radial member 36 of the rotor 31 has hole portions 39 formed at radial positions corresponding to the pins 53. The hole portions 39 are circular holes that penetrate the radial member 36 in the axial direction O. As shown in FIG. 5, the inner diameter of the hole portions 39 is set to be larger than the outer diameter of the pins 53. Each pin 53 is inserted into the hole portion 39 from the other side in the axial direction O.

[0029] (Action and effect) According to the above configuration, when the rotating body 40 rotates, these pins 53 abut against the inner circumferential surfaces of the holes 39, thereby transmitting the torque of the rotating body 40 to the rotor 31. Furthermore, when the rotor 31 functions as a driving force source, the torque of the rotor 31 is transmitted from the inner circumferential surface of the holes 39 to the transmission member 150 through the pins 53. In this way, the pins 53 abut against the inner circumferential surfaces of the holes 39, thereby enabling efficient mutual transmission of torque around the axis O between the rotating body 40 and the rotor 31. Furthermore, since no fastening members such as bolts are required to connect the transmission member 150 and the rotor 31, the number of parts can be reduced.

[0030] Furthermore, with the above configuration, the inner diameter of the hole 39 is larger than the outer diameter of the pin 53. Therefore, when the rotor 31 or the rotating body 40 is displaced in the direction of the axis O, the pin 53 can move back and forth within the hole 39 in the direction of the axis O. Similarly, when a radial displacement occurs, the pin 53 can be slightly displaced in the radial direction within the hole 39. The same applies when the pin 53 is displaced so as to be inclined with respect to the axis O. This makes it possible to prevent displacement due to an external force from being inadvertently transmitted between the rotor 31 and the rotating body 40. Therefore, the rotating machine 1 can be operated more stably.

[0031] The second embodiment of the present disclosure has been described above. Various changes and modifications can be made to the above configuration without departing from the spirit and scope of the present disclosure. For example, the number of pins 53 and radial members 36 is not limited by the second embodiment and may be determined appropriately depending on the design and specifications.

[0032] Third Embodiment Next, a third embodiment of the present disclosure will be described with reference to FIG. 6. Note that the same components as those in the above embodiments are given the same reference numerals, and detailed description thereof will be omitted. As shown in FIG. 6, in this embodiment, a swinging retaining portion 60 is fitted onto the pin 53 described in the second embodiment. The swinging retaining portion 60 is a member that holds the pin 53 within the hole portion 39 so that the pin 53 can swing three-dimensionally. Specifically, a self-aligning roller bearing or a spherical seat bearing is preferably used as the swinging retaining portion 60. The example in FIG. 6 shows a configuration in which a self-aligning roller bearing is used as the swinging retaining portion 60.

[0033] More specifically, the swing retainer 60 includes an inner ring 61, an outer ring 62, and a plurality of rollers 63. The inner ring 61 is cylindrical and centered on the central axis X of the pin 53. The inner ring 61 is fixed to the outer peripheral surface of the pin 53 so as not to move relative to the pin 53. The outer ring 62 covers the inner ring 61 from the outer peripheral side with a gap therebetween. A plurality of rollers 63 are disposed between the inner ring 61 and the outer ring 62. The rollers 63 are arranged in two rows spaced apart along the central axis X. A plurality of rollers 63 are also arranged in the circumferential direction. The rollers 63 are barrel-shaped. The axial direction of the rollers 63 is inclined with respect to the central axis X of the pin 53. The outer peripheral surface of the inner ring 61 and the inner peripheral surface of the outer ring 62 are arc-shaped so that the plurality of rollers 63 can slide. A gap is formed between the outer ring 62 and the inner peripheral surface of the hole 39.

[0034] (Action and effect) According to the above configuration, when an external force is applied to the rotating body 40 or the rotor 31, causing the rotating body 40 or the rotor 31 to be displaced so as to tilt relative to the axis O, the outer ring 62 of the swing retainer 60 fitted onto the pin 53 abuts against the inner circumferential surface of the hole 39. This causes the outer ring 62 to swing relative to the central axis X of the pin 53. In other words, even if the pin 53 tilts, the orientation of the outer ring 62 is maintained unchanged. Therefore, the pin 53 is held swingably within the hole 39. This allows the swing retainer 60 to absorb any tilt or displacement of one side of the rotor 31 or the rotating body 40, preventing the influence of the displacement from being transmitted to the other side. In addition, the aligning function of the swing retainer 60 can autonomously maintain the orientation of the pin 53. This not only enables efficient torque transmission, but also suppresses the influence of external forces other than torque, enabling more stable operation of the rotating machine 1.

[0035] The third embodiment of the present disclosure has been described above. Various modifications and alterations can be made to the above configuration without departing from the spirit and scope of the present disclosure. For example, as shown in FIG. 7 as a modified example, a bearing member 70 can be provided on the inner circumferential surface of the hole 39. The bearing member 70 is fitted into the inner circumferential surface of the hole 39. The bearing member 70 is preferably made of a highly wear-resistant material. With this configuration, the outer ring 62 does not directly contact the inner circumferential surface of the hole 39, thereby preventing wear and deformation of the inner circumferential surface of the hole 39. Furthermore, when the bearing member 70 wears out, the device can be refreshed easily and inexpensively by simply replacing the bearing member 70. This allows the rotating machine 1 to operate more stably over a long period of time.

[0036] 8, a filler member 80 that fills the gap between the radial direction members 36 can be provided integrally with these radial direction members 36. That is, in this case, the outer ring 34 and the second inner ring 33b are connected by a disk-shaped member. This is because, by adopting a configuration in which the pins 53 are inserted into the holes 39, it is possible to absorb displacement and tilt due to external forces as described above, and therefore it is not necessarily necessary to absorb displacement and tilt due to bending of the radial direction members 36. Furthermore, this ensures the rigidity of the rotor 31, making it possible to prevent deformation of the rotor 31 due to torque about the axis O. This configuration can also be applied in combination with the configuration of the second embodiment.

[0037] <Modifications common to all embodiments> In addition, as modified examples common to all embodiments, the configurations shown in Figures 9 and 10 can be adopted. In the example of Figure 9, the circumferential dimension of the radial direction member 36 gradually decreases from the radially inner side to the radially outer side. With this configuration, the inner peripheral side, where a large torque is applied, can stably receive the torque, while the outer peripheral side is more likely to deflect, thereby effectively absorbing external forces. In the example of Figure 10, multiple rod-shaped members extending in the tangential direction of the inner ring 33 are used as the radial direction member 36. These rod-shaped members intersect each other in a spoke-like manner. With this configuration, the same effects as those described above can be obtained.

[0038] <Additional Notes> The rotating machine 1 described in each embodiment can be understood, for example, as follows.

[0039] (1) A rotary machine 1 according to a first aspect comprises a fixed shaft 10 extending in the direction of an axis O, a bearing 20 fitted onto the fixed shaft 10, a generator motor 30 having a rotor 31 rotatably mounted on the fixed shaft 10 via the bearing 20, a rotating body 40 rotatable relative to the fixed shaft 10 and spaced apart from the generator motor 30 in the direction of the axis O, and a transmission member 50 capable of transmitting torque between the rotor 31 and the rotating body 40, wherein the rotor 31 has an inner ring 33 fixed to the bearing 20, an outer ring 34 surrounding the inner ring 33 from the outer periphery, and a plurality of radial members 36 radially connecting the inner ring 33 and the outer ring 34 and spaced apart circumferentially, and the transmission member 50 is connected to the radial members 36 of the rotor 31.

[0040] According to the above configuration, when an external force causes the rotor 40 to displace in the axial direction or radial direction or tilt relative to the axial direction, the radial direction member 36 deflects preferentially, thereby absorbing the displacement. Furthermore, a structure that can resist the above-described external force can be realized without increasing the number of parts, which also prevents the device from becoming larger.

[0041] (2) The rotating machine 1 according to the second aspect is the rotating machine 1 of (1), wherein the transmission member 50 has a cylindrical body portion 51 centered on the axis O and an annular flange portion 52 centered on the axis O and provided at the end of the cylindrical body portion 51 on the rotor 31 side, and the flange portion 52 is fixed to the radial member 36.

[0042] According to the above configuration, the annular flange portion 52 centered on the axis O is fixed to the radial member 36, and the cylindrical body portion 51 is connected to the rotating body 40. This allows torque about the axis O to be transmitted between the rotating body 40 and the rotor 31 without any loss.

[0043] (3) A rotating machine 1 according to a third aspect is the rotating machine 1 of (1), wherein the radial member 36 has a hole 39 formed therein that penetrates the radial member 36 in the direction of the axis O, and the transmission member 50 has a cylindrical body 51 centered on the axis O, and a plurality of pins 53 that protrude in the direction of the axis O from the end face of the cylindrical body 51 on the rotor 31 side and are spaced apart circumferentially, and are each inserted into the hole 39.

[0044] According to the above configuration, the pin 53 abuts against the inner peripheral surface of the hole 39, thereby enabling efficient transmission of torque around the axis O to the rotating body 40. Furthermore, since no fastening members such as bolts are required to connect the transmission member 50 and the rotor 31, the number of parts can be reduced.

[0045] (4) The rotating machine 1 according to the fourth aspect is the rotating machine 1 of (3), wherein the hole portion 39 and the pin 53 are circular when viewed from the direction of the axis O, and the inner diameter of the hole portion 39 is set larger than the outer diameter of the pin 53.

[0046] According to the above configuration, since the inner diameter of the hole 39 is larger than the outer diameter of the pin 53, when displacement occurs in the rotor 31 or the rotating body 40 in the direction of the axis O, the pin 53 can move in the direction of the axis O or radially within the hole 39, thereby absorbing the displacement.

[0047] (5) The rotating machine 1 according to the fifth aspect is the rotating machine 1 of (3) or (4), further comprising a swing holding portion 60 fitted onto the pin 53 and holding the pin 53 inside the hole portion 39 so that it can swing freely in three dimensions.

[0048] According to the above configuration, when an external force is applied to the rotor 31 or the rotating body 40 and the rotor 31 or the rotating body 40 is displaced so as to tilt with respect to the axis O, the swing holding portion 60 fitted onto the pin 53 comes into contact with the inner peripheral surface of the hole 39, thereby holding the pin 53 so as to swing within the hole 39. As a result, the displacement of the rotor 31 or the rotating body 40 is absorbed by the swing holding portion 60, and it is possible to prevent the influence of the displacement from being transmitted to the rotating body 40 side.

[0049] (6) The rotating machine 1 according to the sixth aspect is the rotating machine 1 of (5), further comprising a bearing member 70 fitted into the inner circumferential surface of the hole portion 39 and surrounding the swing retaining portion 60 from the outer circumferential side via a gap.

[0050] According to the above configuration, the bearing member 70 is provided on the inner peripheral surface of the hole 39, which prevents wear and damage to the inner peripheral surface of the hole 39 due to direct sliding contact between the swing retaining member 60 and the inner peripheral surface of the hole 39. Furthermore, when the bearing member 70 wears out, the device can be refreshed easily and inexpensively by replacing only the bearing member 70.

[0051] (7) The rotating machine 1 according to the seventh aspect is a rotating machine 1 according to any one of aspects (3) to (6), and further includes a filling member 80 that fills the space between a pair of radial members 36 adjacent to each other in the circumferential direction.

[0052] According to the above configuration, the rotor 31 is substantially disk-shaped because the spaces between the radial members 36 are filled with the filling member 80. This makes it possible to prevent the rotor 31 from being deformed by torque about the axis O.

[0053] (8) A rotary machine 1 according to an eighth aspect includes a fixed shaft 10 extending in an axial direction O, a bearing 20 fitted onto the fixed shaft 10, a generator motor 30 having a rotor 31 rotatably mounted on the fixed shaft 10 via the bearing 20, a rotating body 40 rotatable relative to the fixed shaft 10 and spaced apart from the generator motor 30 in the axial direction O, and a transmission member 50 capable of transmitting torque between the rotor 31 and the rotating body 40, wherein the rotor 31 includes an inner ring 33 fixed to the bearing 20, an outer ring 34 surrounding the inner ring 33 from the outer periphery, and a transmission member 50 configured to transmit torque between the inner ring 33 and the outer ring 34. the transmission member 50 is connected to the radial members 36 of the rotor 31, and hole portions 39 penetrating the radial members 36 in the direction of the axis O are formed in the radial members 36, and the transmission member 50 has a cylindrical body portion 51 centered on the axis O, and a plurality of pins 53 protruding in the direction of the axis O from an end face of the cylindrical portion 51 on the rotor 31 side and provided at intervals in the circumferential direction, the pins 53 being inserted into the hole portions 39.

[0054] According to the above configuration, the pin 53 abuts against the inner peripheral surface of the hole 39, thereby enabling efficient transmission of torque around the axis O to the rotating body 40. Furthermore, since no fastening members such as bolts are required to connect the transmission member 50 and the rotor 31, the number of parts can be reduced. [Explanation of symbols]

[0055] 1...Rotating machinery 10…Fixed axis 20...Bearing 30...Generator motor 31...Rotor 32...Stator 33...Inner ring 33a...First inner ring 33b...Second inner ring 34...Outer ring 35...Disc member 36...Radial member 37...Permanent magnet 38...Coil 39...hole 40...rotating body 50...Transmission member 51...Cylinder part 52...Flange 53...Pin 60...Swing holding part 61...Inner circle 62...Outer ring 63...around 70...Bearing member 80...Filling member 101...Rotating machinery 150...Transmission member O…Axis line X…center axis

Claims

1. a fixed shaft extending in an axial direction; a bearing fitted onto the fixed shaft; a generator motor having a rotor that is rotatably mounted on the fixed shaft via the bearing; a rotor that is rotatable relative to the fixed shaft and is spaced apart from the generator motor in the axial direction; a transmission member capable of transmitting torque between the rotor and the rotating body; Equipped with The rotor is an inner ring fixed to the bearing; an outer ring surrounding the inner ring from an outer periphery thereof; a plurality of radial members that connect the inner ring and the outer ring in a radial direction and are spaced apart in a circumferential direction; and the transmission member is connected to the radial member of the rotor, The radial direction member is formed with a hole portion that penetrates the radial direction member in the axial direction, The transmission member is a cylindrical body portion having a cylindrical shape centered on the axis; a plurality of pins projecting in the axial direction from an end surface of the cylindrical portion on the rotor side, spaced apart in the circumferential direction, and inserted into the holes; and The hole and the pin are circular when viewed from the axial direction, and the inner diameter of the hole is set larger than the outer diameter of the pin.

2. a fixed shaft extending in an axial direction; a bearing fitted onto the fixed shaft; a generator motor having a rotor that is rotatably mounted on the fixed shaft via the bearing; a rotor that is rotatable relative to the fixed shaft and is spaced apart from the generator motor in the axial direction; a transmission member capable of transmitting torque between the rotor and the rotating body; Equipped with The rotor is an inner ring fixed to the bearing; an outer ring surrounding the inner ring from an outer periphery thereof; a plurality of radial members that connect the inner ring and the outer ring in a radial direction and are spaced apart in a circumferential direction; and the transmission member is connected to the radial member of the rotor, The radial direction member is formed with a hole portion that penetrates the radial direction member in the axial direction, The transmission member is a cylindrical body portion having a cylindrical shape centered on the axis; a plurality of pins projecting in the axial direction from an end surface of the cylindrical portion on the rotor side, spaced apart in the circumferential direction, and inserted into the holes; and The rotary machine further includes a swing holding portion that is fitted onto the pin and holds the pin inside the hole so that the pin can swing freely in three dimensions.

3. The rotary machine according to claim 2 , further comprising a bearing member fitted into an inner peripheral surface of the hole and surrounding the swing holding portion from an outer peripheral side with a gap therebetween.

4. 4. The rotary machine according to claim 1, further comprising a filling member that fills a gap between a pair of the radial members adjacent in the circumferential direction, so that the inner ring and the outer ring are connected by a disk-shaped member centered on the axis, which is made of the radial members and the filling member.

5. The transmission member is a cylindrical body portion having a cylindrical shape centered on the axis; an annular flange portion provided at an end of the cylindrical portion on the rotor side and centered on the axis; and The rotary machine according to claim 1 , wherein the flange portion is fixed to the radial direction member.

6. a fixed shaft extending in an axial direction; a bearing fitted onto the fixed shaft; a generator motor having a rotor that is rotatably mounted on the fixed shaft via the bearing; a rotor that is rotatable relative to the fixed shaft and is spaced apart from the generator motor in the axial direction; a transmission member capable of transmitting torque between the rotor and the rotating body; Equipped with The rotor is an inner ring fixed to the bearing; an outer ring surrounding the inner ring from an outer periphery thereof; a plurality of radial members that connect the inner ring and the outer ring in a radial direction and are spaced apart in a circumferential direction; Equipped with By further including a filling member that fills a gap between a pair of the radial direction members adjacent in the circumferential direction, the inner ring and the outer ring are connected by a disk-shaped member centered on the axis, which is made of the radial direction member and the filling member, the transmission member is connected to the radial member of the rotor, The radial direction member is formed with a hole portion that penetrates the radial direction member in the axial direction, The transmission member is a cylindrical body portion having a cylindrical shape centered on the axis; a plurality of pins projecting in the axial direction from an end surface of the cylindrical portion on the rotor side, spaced apart in the circumferential direction, and inserted into the holes; and The hole and the pin are circular when viewed from the axial direction, and the inner diameter of the hole is set larger than the outer diameter of the pin.

7. a fixed shaft extending in an axial direction; a bearing fitted onto the fixed shaft; a generator motor having a rotor that is rotatably mounted on the fixed shaft via the bearing; a rotor that is rotatable relative to the fixed shaft and is spaced apart from the generator motor in the axial direction; a transmission member capable of transmitting torque between the rotor and the rotating body; Equipped with The rotor is an inner ring fixed to the bearing; an outer ring surrounding the inner ring from an outer periphery thereof; a plurality of radial members that connect the inner ring and the outer ring in a radial direction and are spaced apart in a circumferential direction; Equipped with By further including a filling member that fills a gap between a pair of the radial direction members adjacent in the circumferential direction, the inner ring and the outer ring are connected by a disk-shaped member centered on the axis, which is made of the radial direction member and the filling member, the transmission member is connected to the radial member of the rotor, The radial direction member is formed with a hole portion that penetrates the radial direction member in the axial direction, The transmission member is a cylindrical body portion having a cylindrical shape centered on the axis; a plurality of pins projecting in the axial direction from an end surface of the cylindrical portion on the rotor side, spaced apart in the circumferential direction, and inserted into the holes; and The rotary machine further includes a swing holding portion that is fitted onto the pin and holds the pin inside the hole so that the pin can swing freely in three dimensions.

8. A rotary machine as described in Claim 7, further comprising a bearing member fitted into the inner surface of the hole portion and surrounding the swing retaining portion from the outer periphery via a gap.

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