Rotating machines

Abstract

To provide a rotary machine that is able to improve manufacturability of a frame.SOLUTION: A rotary machine includes a frame 15 having: an outer shell portion 40 disposed outside in a radial direction of a stator core 10; a stator contact portion 45 disposed at one end side of the outer shell portion 40 in an axial direction; a first mounting member 31 and a second mounting member 34 in each of which a mounting surface relative to a mounting portion 100 for mounting the rotary machine 1 thereon is independently formed. The stator contact portion 45 abuts on an end of the stator core 10 in the axial direction. The frame 15 has a plurality of division portions 20 by its being divided into at least two in a circumferential direction. The first mounting member 31 and the second mounting member 34 are arranged in the different division portions 20. The plurality of division portions 20 have respective outer shell portions 40 and the stator contact portions 45. The respective stator contact portions 45 are connected in a circumferential direction to continuously form the frame 15 over one circumference in the circumferential direction.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] FIELD An embodiment of the present invention relates to a rotating machine. [Background technology]

[0002] As a method for the frame structure of a rotating machine, for example, a structure in which the frame is made of casting, as in the rotating electric machine described in Patent Document 1, is used as a method for the frame structure of a conventional rotating machine. Another example of a frame structure of a rotating machine is a structure in which split frames are arranged on both sides of the stator core in the axial direction, and these split frames are welded together with a member that covers part of the outer periphery of the stator core and is arranged between the split frames, as in the rotating electric machine described in Patent Document 2. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2013 / 069322 [Patent Document 2] Japanese Patent Application Laid-Open No. 2011-177017 Summary of the Invention [Problem to be solved by the invention]

[0004] In a frame structure in which the split frames are joined together by members arranged around the stator core, multiple members must be prepared and aligned around the stator core, and then welded one by one, which can complicate manufacturing. For this reason, conventional rotating machines have room for improvement in terms of frame manufacturability.

[0005] The present invention has been made in view of the above, and has an object to provide a rotating machine that can improve the manufacturability of a frame. [Means for solving the problem]

[0006] The rotating machine of the embodiment includes a stator core formed in a cylindrical shape, an outer shell portion disposed radially outside the stator core and having a width in the axial direction of the stator core substantially equal to the length of the stator core in the axial direction, a stator abutment portion that is plate-shaped and has a thickness direction oriented in the axial direction and is disposed at one end of the outer shell portion in the axial direction, an end face portion that is plate-shaped and has a thickness direction oriented in the axial direction and is disposed at the other end of the outer shell portion in the axial direction at a position radially outside the position of the outer circumferential surface of the stator core, a first mounting member having a mounting surface formed thereon for a mounting portion that is another member for mounting the rotating machine, and a mounting portion that is formed on the mounting surface of the first mounting member and has a thickness direction oriented in the axial direction. the stator abutment portion has a hole formed therein that is larger than the inner diameter of the stator core, and abuts against an end of the stator core in the axial direction; the frame is divided into at least two parts in a circumferential direction centered on the axis of the stator core, and has a plurality of divided parts, and the first and second mounting members are arranged in the divided parts that are different from each other; each of the divided parts has the outer shell portion, the stator abutment portion, and the end face portion; and at least each of the stator abutment portions is connected to each other in the circumferential direction, so that the frame is formed continuously around one circumference in the circumferential direction. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of a stator core and a frame of a rotating machine according to an embodiment. [Figure 2] FIG. 2 is a perspective view of the frame shown in FIG. [Figure 3] FIG. 3 is an explanatory diagram showing a state in which the rotating machine is attached to the attachment portion. [Figure 4] 4 is a perspective view of each of the first divided portion and the second divided portion that constitute the frame shown in FIG. 2. FIG. [Figure 5] FIG. 5 is an explanatory diagram showing a state in which the stator core is inserted into the frame. [Figure 6] FIG. 6 is a plan view showing a different form of the first mounting member provided on the first divided portion. [Figure 7] FIG. 7 is a front view showing a different form of the second mounting member provided on the second divided portion. [Figure 8] FIG. 8 is an explanatory diagram showing a modified example of the frame according to the embodiment, and is a perspective view of the frame in which divided portions are joined together by bolts. [Figure 9] FIG. 9 is a detailed view of part A in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Exemplary embodiments of the present invention are disclosed below. The configurations of the embodiments described below, as well as the actions and effects brought about by the configurations, are merely examples. The present invention can also be realized by configurations other than those disclosed in the following embodiments. Furthermore, according to the present invention, it is possible to obtain at least one of the various effects (including derivative effects) obtained by the configurations.

[0009] Hereinafter, an example of a rotating machine according to this embodiment will be described with reference to the accompanying drawings.

[0010] [Embodiment] Fig. 1 is a perspective view of a stator core 10 and a frame 15 of a rotating machine 1 according to an embodiment. Note that in Fig. 1, a retaining member 60, which will be described later, is hatched to make it easier to identify. The frame 15 according to an embodiment is capable of supporting the stator core 10 of the rotating machine 1. The stator core 10 supported by the frame 15 is formed in a substantially cylindrical shape, and on the inner peripheral surface side, multiple grooves extending in the axial direction of the cylinder are formed lined up in the circumferential direction of the cylinder.

[0011] In the following description, the axial direction of the stator core 10 of the rotating machine 1 will be referred to as the axial direction of the rotating machine 1, and the radial direction of the stator core 10 will be referred to as the radial direction of the rotating machine 1. The outer side in the radial direction refers to the side away from the axial center of the stator core 10 in the radial direction, and the inner side in the radial direction refers to the side closer to the axial center of the stator core 10 in the radial direction. The circumferential direction refers to the direction around the axial center of the stator core 10. In the following description, the up-down direction in the normal operating state of the rotating machine 1 will be referred to as the up-down direction of the rotating machine 1, the upper side in the normal operating state of the rotating machine 1 will be referred to as the upper side in the rotating machine 1, and the lower side in the normal operating state of the rotating machine 1 will be referred to as the lower side in the rotating machine 1. The horizontal direction in the normal operating state of the rotating machine 1 will also be referred to as the horizontal direction in the rotating machine 1.

[0012] The frame 15 supports the stator core 10 by covering the outer peripheral surface 11 of the stator core 10 in the circumferential direction and supporting the outer peripheral surface 11 at multiple locations. The frame 15 has an outer casing portion 40, an end face portion 41, and a stator abutment portion 45. When the frame 15 supports the stator core 10, the outer casing portion 40 is disposed outside the outer peripheral surface 11 of the stator core 10 in the radial direction and is formed in a position that covers the outer peripheral surface 11 of the stator core 10. Furthermore, the width of the outer casing portion 40 in the axial direction of the stator core 10 is approximately the same as the length of the stator core 10 in the axial direction. In other words, the width of the outer casing portion 40 in the axial direction of the stator core 10 is formed to be substantially the same as the length of the stator core 10 in the axial direction.

[0013] The stator abutment portion 45 is formed in a plate shape with its thickness direction oriented in the axial direction, and is arranged on one end side of the outer casing portion 40 in the axial direction of the stator core 10. The end face portion 41 is formed in a plate shape with its thickness direction oriented in the axial direction of the stator core 10, and is arranged on the other end side of the outer casing portion 40 in the axial direction of the stator core 10, i.e., on the opposite side of the outer casing portion 40 in the axial direction from the side where the stator abutment portion 45 is arranged. In addition, the end face portion 41 is arranged in a position radially outward of the position of the outer circumferential surface 11 of the stator core 10.

[0014] 2 is a perspective view of the frame 15 shown in FIG. 1. The outer shell portions 40 are arranged at multiple locations in the circumferential direction with intervals between them. Each outer shell portion 40 has an outer shell spacing portion 40b that is arranged radially outward of the outer peripheral surface 11 of the stator core 10 and covers the outer peripheral surface 11 of the stator core 10, and a support portion 40a that is formed radially inward from the outer shell spacing portion 40b and comes into contact with the outer peripheral surface 11 of the stator core 10. The outer shell spacing portion 40b is formed in a plate-like shape with a thickness direction that is approximately radial, and is arranged radially outward and spaced apart from the outer peripheral surface 11 of the stator core 10 when the frame 15 supports the stator core 10. In each outer casing portion 40, the support portions 40a are arranged on both sides of the outer casing separation portion 40b in the circumferential direction, and are inclined relative to the outer casing separation portion 40b in a radially inward direction as they move away from the outer casing separation portion 40b in the circumferential direction. The end of the support portion 40a on the side opposite to the side where the outer casing separation portion 40b is located in the circumferential direction, i.e., the tip portion of the support portion 40a, can come into contact with the outer peripheral surface 11 of the stator core 10. When the outer casing portion 40 supports the stator core 10 on the frame 15, the support portions 40a abut against the outer peripheral surface 11 of the stator core 10, thereby restricting radial movement of the stator core 10.

[0015] The end surface portion 41 and the stator abutment portion 45 are formed in a plate-like shape with the thickness direction of the plate oriented in the axial direction of the stator core 10, and both are connected to the outer shell portion 40. Of these, the stator abutment portion 45 has a hole formed therethrough in the thickness direction of the plate, the hole having a diameter larger than the inner diameter of the stator core 10 and smaller than the outer diameter of the stator core 10. The center of the hole formed in the stator abutment portion 45 is located on the axis of the stator core 10. The diameter of the hole formed in the stator abutment portion 45 is larger than the diameter of a circle connecting the groove bottoms of multiple grooves formed on the inner peripheral surface of the stator core 10, i.e., the outermost parts of the grooves in the radial direction.

[0016] The end face portions 41 are arranged at multiple locations in the circumferential direction while being spaced apart from one another in the circumferential direction, and each end face portion 41 is connected to an end portion of the outer casing 40 on the side opposite to the side where the stator abutment portion 45 is located. The end face portions 41 are formed to protrude radially inward from the position where they are connected to the outer casing 40. The radially inner portion of each end face portion 41 formed in this manner has an arc-like shape centered on the axis of the stator core 10 supported by the frame 15. More specifically, the radially inner portion of each end face portion 41 has the shape of a part of a circle whose diameter is larger than the outer diameter of the stator core 10 supported by the frame 15. The radially inner portion of each of the multiple end face portions 41 formed to protrude radially inward from the outer casing 40 has the shape of a part of a circle whose center is the axis of the stator core 10 and which is larger than the outer diameter of the stator core 10.

[0017] Furthermore, the distance between end face portion 41 and stator abutment portion 45 in the axial direction of stator core 10, i.e., the distance between the surface of end face portion 41 facing stator abutment portion 45 and the surface on the other side of stator abutment portion 45, is approximately the same as the length of stator core 10 in the axial direction. In other words, the distance between the opposing surfaces of end face portion 41 and stator abutment portion 45 is approximately the same as the distance between one end face and the other end face of stator core 10 in the axial direction of stator core 10.

[0018] In the frame 15 formed in this manner, a pressing member 60 (see FIG. 1) that restricts axial movement of the stator core 10 is arranged on the end face portion 41 side when the frame 15 supports the stator core 10. The frame 15 restricts axial movement of the stator core 10 relative to the frame 15 by the pressing member 60 and the stator abutment portion 45.

[0019] More specifically, when the stator core 10 is supported by the frame 15, the stator abutment portion 45 formed on the frame 15 abuts against the axial end portion of the stator core 10, thereby restricting axial movement of the stator core 10. That is, the surface of the stator abutment portion 45 facing the end face portion 41 abuts against the axial end portion of the stator core 10, thereby restricting axial movement of the stator core 10 toward the side where the stator abutment portion 45 is located.

[0020] Furthermore, the retaining member 60 disposed on the end face portion 41 side of the frame 15 is formed in an annular shape, with an outer diameter approximately equal to the diameter of the inner arc of the end face portion 41 in the radial direction, and an inner diameter larger than the inner diameter of the stator core 10. Specifically, the inner diameter of the annular retaining member 60 is formed in a shape approximately equal to the diameter of the hole formed in the stator abutment portion 45. This makes it possible to couple the outer periphery of the retaining member 60 to the end face portion 41. When the stator core 10 is supported by the frame 15, by coupling the retaining member 60 to the end face portion 41, the retaining member 60 comes into contact with the stator core 10 from the side opposite to the side that abuts against the stator abutment portion 45 in the axial direction of the stator core 10, thereby restricting axial movement of the stator core 10. That is, the pressing member 60 attached to the end face portion 41 restricts the axial movement of the stator core 10 toward the side where the pressing member 60 is located by abutting the surface of the pressing member 60 facing the stator abutment portion 45 against the end portion of the stator core 10 in the axial direction.

[0021] FIG. 3 is an explanatory diagram showing a state in which the rotating machine 1 is attached to a mounting portion 100. The rotating machine 1 is attached to, for example, a bogie of a railway vehicle and used as a power source for running the railway vehicle. When attaching the rotating machine 1 to the bogie of a railway vehicle, the mounting member 30 provided on the rotating machine 1 is attached to a mounting portion 100 on a bogie frame of the bogie, thereby attaching the rotating machine 1 to the bogie. The mounting portion 100 is another member for attaching the rotating machine 1, that is, an external member of the rotating machine 1. When attaching the rotating machine 1 to the bogie, the rotating machine 1 is disposed between the mounting portion 100 of the bogie frame and an axle 110, which is the rotation axis of the wheels of the railway vehicle. Furthermore, the rotating machine 1 is attached to the mounting portion 100 so that the rotation axis of the rotating machine 1 is oriented horizontally and parallel to the axle 110.

[0022] The mounting members 30 for mounting the rotating machine 1 to the mounting portion 100 are arranged in two locations, one on the upper side and one on the lower side when the rotating machine 1 is mounted to the mounting portion 100, and the two mounting members 30 are arranged on the same side in the horizontal direction with respect to the rotation axis of the rotating machine 1 when installed on the mounting portion 100. That is, the rotating machine 1 is provided with a first mounting member 31 located on the upper side when the rotating machine 1 is mounted to the mounting portion 100, and a second mounting member 34 located below the first mounting member 31, as members for mounting the rotating machine 1 to the mounting portion 100. The first mounting member 31 and the second mounting member 34 are independently mounted to different surfaces of the mounting portion 100. The first mounting member 31 is mounted to the top surface of the mounting portion 100, and the second mounting member 34 is mounted to one of the side surfaces of the mounting portion 100 that faces the rotating machine 1. The rotating machine 1 is attached to the bogie of a railway vehicle by attaching the thus provided two mounting members 30 to the mounting portions 100 on the bogie frame.

[0023] Furthermore, a safety nose 37 is arranged on the rotating machine 1 on the side opposite to the side on which the mounting part 100 is located in the horizontal direction with respect to the rotation axis of the rotating machine 1 when installed on the mounting part 100. The safety nose 37 is provided as a fall prevention member that prevents the rotating machine 1 from falling by abutting against a member other than the rotating machine 1 and the mounting part 100 when the first mounting member 31 and the second mounting member 34 are detached from the mounting part 100. The safety nose 37 is arranged to protrude from the rotating machine 1 at a position closer to the upper side when the rotating machine 1 is attached to the mounting part 100, and is located above the axle 110 when the rotating machine 1 is attached to the mounting part 100.

[0024] The safety nose 37 thus provided is capable of preventing the rotating machine 1 from falling when the structure that mounts the rotating machine 1 to the mounting portion 100 with the mounting member 30 is damaged, by the safety nose 37 getting caught on the axle 110 from above. That is, the axle 110 is the member that the safety nose 37 abuts against, and when the first mounting member 31 and the second mounting member 34 come off the mounting portion 100, the safety nose 37 abuts against the axle 110, thereby preventing the rotating machine 1 from falling.

[0025] The frame 15 of the rotating machine 1 configured as above is divided into at least two parts in the circumferential direction about the axis of the stator core, thereby providing a plurality of divided sections 20, each of which constitutes a portion of the frame 15 in the circumferential direction. The frame 15 is divided into, for example, at least three parts in the circumferential direction, thereby providing a first divided section 21, a second divided section 22, and a connecting divided section 25, each of which constitutes a portion of the frame 15 in the circumferential direction (see FIG. 2). The first divided section 21, the second divided section 22, and the connecting divided section 25 each have an outer shell section 40, a stator abutment section 45, and an end surface section 41. Of these, the outer shell section 40 includes, in each divided section 20, an outer shell separation section 40b and support sections 40a arranged on both sides of the outer shell separation section 40b in the circumferential direction. The frame 15 is formed as a continuous frame 15 around one circumferential circumference by joining the first divided portion 21, the second divided portion 22, and the connecting divided portion 25 in the circumferential direction.

[0026] Of these, first divided portion 21 is capable of supporting a portion of outer peripheral surface 11 of stator core 10 in the circumferential direction, as support portion 40a of outer shell portion 40 of first divided portion 21 substantially comes into contact with outer peripheral surface 11 of stator core 10. In this case, "support portion 40a of outer shell 40 substantially comes into contact with outer peripheral surface 11 of stator core 10" includes not only a state in which support portion 40a comes into direct contact with outer peripheral surface 11 of stator core 10, but also a state in which support portion 40a is welded to outer peripheral surface 11 of stator core 10 and comes into contact via the welded portion, even if there is a gap between support portion 40a and outer peripheral surface 11.

[0027] Furthermore, the second divided portion 22 is capable of supporting a position in the circumferential direction of the outer peripheral surface 11 of the stator core 10 that is different from the position supported by the first divided portion 21, because the support portion 40a of the outer shell portion 40 of the second divided portion 22 is substantially in contact with the outer peripheral surface 11 of the stator core 10. The first mounting member 31 and the second mounting member 34 are arranged in different divided portions 20, with the first mounting member 31 arranged in the first divided portion 21 and the second mounting member 34 arranged in the second divided portion 22.

[0028] Furthermore, the connecting division portions 25 are members that support positions on the outer peripheral surface 11 of the stator core 10 in the circumferential direction that are different from the positions supported by the first division portion 21 and the second division portion 22, as a result of the support portions 40a of the outer casing portion 40 of the connecting division portions 25 being in substantial contact with the outer peripheral surface 11 of the stator core 10. In this embodiment, the connecting division portions 25 are divided into two in the circumferential direction about the axis of the stator core 10, and thus have a third division portion 26 and a fourth division portion 27, each of which constitutes a portion of the frame 15 in the circumferential direction. The third division portion 26 and the fourth division portion 27 each have an outer casing portion 40, a stator abutment portion 45, and an end surface portion 41. Of these, the outer casing portion 40 includes an outer casing separation portion 40b and support portions 40a located on both sides of the outer casing separation portion 40b in the circumferential direction, in each of the third division portion 26 and the fourth division portion 27.

[0029] The third divided portion 26 is able to support a portion of the outer circumferential surface 11 of the stator core 10 because the support portion 40a of the outer casing 40 of the third divided portion 26 is in substantial contact with the outer circumferential surface 11 of the stator core 10. The fourth divided portion 27 is able to support a position on the outer circumferential surface 11 of the stator core 10 that is different from the position supported by the third divided portion 26 because the support portion 40a of the outer casing 40 of the fourth divided portion 27 is in substantial contact with the outer circumferential surface 11 of the stator core 10.

[0030] Both first divided portion 21 and second divided portion 22 are formed in the circumferential direction of outer peripheral surface 11 of stator core 10, which is formed in a substantially cylindrical shape, over a range that is nearly 1 / 4 of the circumference of outer peripheral surface 11. Furthermore, connecting divided portion 25 is formed in the circumferential direction of outer peripheral surface 11 of stator core 10, which is formed in a substantially cylindrical shape, over a range that is nearly 1 / 2 of the circumference of outer peripheral surface 11. In other words, third divided portion 26 and fourth divided portion 27 that constitute connecting divided portion 25 are both formed in the circumferential direction of outer peripheral surface 11 of stator core 10, over a range that is nearly 1 / 4 of the circumference of outer peripheral surface 11.

[0031] The first divided portion 21, the second divided portion 22, the third divided portion 26, and the fourth divided portion 27, which constitute the frame 15 that supports the stator core 10, are all cast members manufactured by casting. The first divided portion 21, the second divided portion 22, the third divided portion 26, and the fourth divided portion 27 are arranged side by side in the circumferential direction of the stator core 10, and their respective circumferential ends are joined to other divided portions 20 by welding, thereby constituting the frame 15 that is formed around the stator core 10 in the circumferential direction. In this embodiment, the first divided portion 21, the second divided portion 22, the third divided portion 26, and the fourth divided portion 27 are joined together in the circumferential direction at their stator abutment portions 45. In addition, the end face portion 41 of the first divided portion 21 and the end face portion 41 of the fourth divided portion 27 are joined in the circumferential direction, and the end face portion 41 of the second divided portion 22 and the end face portion 41 of the third divided portion 26 are also joined in the circumferential direction.

[0032] That is, the first divided section 21 and the second divided section 22 are joined at joints 28, which are their respective circumferential ends, and the second divided section 22 and the third divided section 26 are joined at joints 28, which are their respective circumferential ends. The joints 28 between the first divided section 21 and the second divided section 22 are at the circumferential ends of the respective stator abutment sections 45, and the joints 28 between the second divided section 22 and the third divided section 26 are at the circumferential ends of the respective stator abutment sections 45 and the circumferential ends of the respective end face sections 41. The third divided section 26 and the fourth divided section 27 are joined at joints 28, which are their respective circumferential ends, and the fourth divided section 27 and the first divided section 21 are joined at joints 28, which are their respective circumferential ends. The joint 28 between the third divided portion 26 and the fourth divided portion 27 is the circumferential end of each stator abutment portion 45, and the joint 28 between the fourth divided portion 27 and the first divided portion 21 is the circumferential end of each stator abutment portion 45 and the circumferential end of each end face portion 41.

[0033] In the following description, the first dividing section 21, the second dividing section 22, the third dividing section 26, and the fourth dividing section 27 may be simply referred to as dividing section 20 when no particular division section is specified.

[0034] Fig. 4 is a perspective view of each of the first divided portion 21 and the second divided portion 22 that constitute the frame 15 shown in Fig. 2. Mounting members 30 are arranged on the first divided portion 21 and the second divided portion 22, respectively, with a first mounting member 31 arranged on the first divided portion 21 and a second mounting member 34 arranged on the second divided portion 22.

[0035] Specifically, the first divided section 21 in which the first mounting member 31 is disposed is formed so as to be disposed over a range from near the upper end in the circumferential direction of the stator core 10 supported by the frame 15 to near the center in the up-down direction of the stator core 10 when the rotating machine 1 is mounted on the mounting section 100 (see FIG. 3 ). In other words, the first divided section 21 is formed so as to be disposed over a range from approximately 0° to approximately 90° when the upper end of the frame 15 in the state in which the rotating machine 1 is mounted on the mounting section 100 is set to 0° in the circumferential direction of the stator core 10. The first divided section 21 has an outer shell section 40, an end face section 41, and a stator abutment section 45 within the range defined by the first divided section 21 with respect to the frame 15.

[0036] The first mounting member 31 is disposed in the first divided section 21 formed in this manner, at a position radially outward of the outer shell section 40, spanning between the end face section 41 and the stator abutment section 45. The first mounting member 31 disposed between the end face section 41 and the stator abutment section 45 is formed to protrude from the first divided section 21 toward the outside of the frame 15 in a horizontal direction perpendicular to the axial direction of the stator core 10 in the orientation in which the rotating machine 1 is attached to the attachment section 100. The first mounting member 31 formed in this manner is formed in a plate-like shape with the thickness direction of the plate being the up-down direction in the orientation in which the rotating machine 1 is attached to the attachment section 100, and its lower surface serves as the attachment surface 31a of the attachment section 100 when the rotating machine 1 is attached to the attachment section 100.

[0037] The first mounting member 31 is formed with bolt holes 32, which are holes for passing bolts that are fastening members used when mounting the rotating machine 1 to the mounting part 100. The bolt holes 32 are holes that penetrate the first mounting member 31 in the thickness direction of the first mounting member 31, and in this embodiment, three bolt holes 32 are formed lined up in the axial direction of the stator core 10.

[0038] The first mounting member 31 formed in this manner is formed at a position away from the end of the first divided section 21 in the circumferential direction of the stator core 10 supported by the frame 15. In other words, the end in the circumferential direction of the stator abutment portion 45 of the first divided section 21 and the first mounting member 31 provided on the first divided section 21 are spaced apart from each other.

[0039] Furthermore, the second divided section 22 on which the second mounting member 34 is disposed is formed so as to be disposed over a range from near the center between the upper and lower ends in the circumferential direction of the stator core 10 supported by the frame 15 to near the lower end in the circumferential direction when the rotating machine 1 is mounted on the mounting section 100 (see FIG. 3 ). In other words, the second divided section 22 is formed so as to be disposed over a range from approximately 90° to approximately 180° when the upper end of the frame 15 in the state in which the rotating machine 1 is mounted on the mounting section 100 is set to 0° in the circumferential direction of the stator core 10. The second divided section 22 has an outer shell section 40, an end surface section 41, and a stator abutment section 45 within the range defined by the second divided section 22 with respect to the frame 15.

[0040] The second mounting member 34 is disposed in the second divided section 22 formed in this manner, at a position radially outward of the outer shell section 40, spanning between the end face portion 41 and the stator abutment portion 45. The second mounting member 34 disposed between the end face portion 41 and the stator abutment portion 45 is formed to have a surface facing outward from the frame 15 in a horizontal direction perpendicular to the axial direction of the stator core 10 when the rotating machine 1 is attached to the mounting section 100. The second mounting member 34 formed in this manner has a surface facing in the horizontal direction that serves as a mounting surface 34a for the mounting section 100 when the rotating machine 1 is attached to the mounting section 100. The second mounting member 34 is formed in the second divided section 22 and has such mounting surfaces 34a for the mounting section 100 at two locations on the stator core 10 that are spaced apart in the axial direction, i.e., on the end face portion 41 side and the stator abutment portion 45 side. The attachment surface 34 a of the second attachment member 34 is an attachment surface that is attached to the attachment portion 100 independently of the attachment surface 31 a of the first attachment member 31 .

[0041] The second mounting member 34 is formed with threaded holes 35 into which bolts, which are fastening members used when mounting the rotating machine 1 to the mounting portion 100, are screwed. One threaded hole 35 is formed on each of two mounting surfaces 34a of the second mounting member 34 that are spaced apart in the axial direction on the stator core 10, and the threaded holes 35 are formed in a direction normal to the mounting surfaces 34a of the second mounting member 34. In other words, the threaded holes 35 are formed with their depth direction oriented horizontally when the rotating machine 1 is mounted to the mounting portion 100.

[0042] The second mounting member 34 thus formed is formed at a position away from the end of the second divided section 22 in the circumferential direction of the stator core 10 supported by the frame 15. In other words, the end in the circumferential direction of the stator abutment portion 45 of the second divided section 22 and the second mounting member 34 provided on the second divided section 22 are spaced apart from each other.

[0043] The frame 15 also has a third divided portion 26 (see FIG. 2) and a fourth divided portion 27 (see FIG. 2) that constitute the connecting divided portion 25. That is, when the rotating machine 1 is attached to the mounting portion 100 (see FIG. 3), the third divided portion 26 is formed so as to be disposed over a range from near the lower end in the circumferential direction of the stator core 10 supported by the frame 15 to near the center of the stator core 10 on the opposite side in the up-down direction from the side where the second divided portion 22 is located. That is, when the upper end of the frame 15 in the state where the rotating machine 1 is attached to the mounting portion 100 is set to 0° in the circumferential direction of the stator core 10, the third divided portion 26 is formed so as to be disposed over a range from approximately 180° to approximately 270°. The third divided portion 26 has an outer shell portion 40, an end surface portion 41, and a stator abutment portion 45 within the range defined by the third divided portion 26 relative to the frame 15.

[0044] Furthermore, when the rotating machine 1 is attached to the mounting part 100, the fourth divided part 27 is formed so as to be disposed over a range from near the center of the stator core 10 supported by the frame 15 on the side opposite to the side where the first divided part 21 is located, between the upper and lower ends in the circumferential direction, to near the upper end in the circumferential direction. In other words, when the upper end of the frame 15 in the state where the rotating machine 1 is attached to the mounting part 100 is set to 0° in the circumferential direction of the stator core 10, the fourth divided part 27 is formed so as to be disposed over a range from approximately 270° to approximately 360°. The fourth divided part 27 has an outer shell part 40, an end face part 41, and a stator abutment part 45 within the range defined by the fourth divided part 27 with respect to the frame 15.

[0045] Furthermore, a safety nose 37, which is a fall prevention member in the rotating machine 1, is disposed in the fourth divided section 27. The safety nose 37 disposed in the fourth divided section 27 is formed to protrude radially outward from the outer shell portion 40 of the fourth divided section 27. The safety nose 37 is formed in a position away from the end of the fourth divided section 27 in the circumferential direction of the stator core 10 supported by the frame 15. In other words, the end of the fourth divided section 27 in the circumferential direction of the stator core 10 supported by the frame 15 and the safety nose 37 provided in the fourth divided section 27 are spaced apart from each other.

[0046] The first divided portion 21, second divided portion 22, third divided portion 26, and fourth divided portion 27 formed as described above are each formed by casting. That is, the first divided portion 21 is a casting formed integrally with the first mounting member 31, the second divided portion 22 is a casting formed integrally with the second mounting member 34, and the fourth divided portion 27 is a casting formed integrally with the safety nose 37.

[0047] Next, the assembly of the frame 15 according to this embodiment will be described. In this embodiment, the frame 15 that supports the stator core 10 is first assembled by itself without including the stator core 10. The frame 15 is assembled by joining the first divided section 21, the second divided section 22, the third divided section 26, and the fourth divided section 27, each of which is manufactured by casting. These sections are joined by welding. The ends of each divided section 20 in the circumferential direction are joined to the other divided sections 20 by welding.

[0048] 2, one circumferential end of the first divided portion 21 is coupled to the second divided portion 22 at a position away from the first mounting member 31, and the other circumferential end is coupled to the fourth divided portion 27 of the connecting divided portion 25. Furthermore, one circumferential end of the second divided portion 22 is coupled to the first divided portion 21 at a position away from the second mounting member 34, and the other circumferential end is coupled to the third divided portion 26 of the connecting divided portion 25. Furthermore, one circumferential end of the third divided portion 26 of the connecting divided portion 25 is coupled to the fourth divided portion 27, and the other circumferential end is coupled to the second divided portion 22. Furthermore, one circumferential end of the fourth divided portion 27 of the connecting divided portion 25 is coupled to the first divided portion 21 at a position away from the safety nose 37, and the other circumferential end is coupled to the third divided portion 26.

[0049] Specifically, the first divided section 21 and the second divided section 22 are joined by butting together the end of the stator abutting section 45 of the first divided section 21 that faces the second divided section 22 in the circumferential direction with the end of the stator abutting section 45 of the second divided section 22 that faces the first divided section 21 in the circumferential direction, and this portion is welded together to form a joint 28. The first divided section 21 and the second divided section 22 are joined together by the joint 28 that is joined together by welding in this manner.

[0050] The second divided portion 22 and the third divided portion 26 are joined together by butting together the end of the stator abutting portion 45 of the second divided portion 22 that faces the third divided portion 26 in the circumferential direction with the end of the stator abutting portion 45 of the third divided portion 26 that faces the second divided portion 22 in the circumferential direction, and this portion is welded together as a joint 28. The second divided portion 22 and the third divided portion 26 are joined together by butting together the end of the end surface 41 of the second divided portion 22 that faces the third divided portion 26 in the circumferential direction with the end surface 41 of the third divided portion 26 that faces the second divided portion 22 in the circumferential direction, and this portion is welded together as a joint 28. The second divided portion 22 and the third divided portion 26 are joined together by joint 28 joined together by welding in this manner.

[0051] Furthermore, the third divided section 26 and the fourth divided section 27 are joined together by butting together the end of the stator abutting section 45 of the third divided section 26 on the fourth divided section 27 side in the circumferential direction with the end of the stator abutting section 45 of the fourth divided section 27 on the third divided section 26 side in the circumferential direction, and this portion is welded together to form a joint 28. The third divided section 26 and the fourth divided section 27 are joined together by joint 28 joined together in this way by welding.

[0052] Furthermore, the fourth divided portion 27 and the first divided portion 21 are joined together by butting together the end of the stator abutting portion 45 of the fourth divided portion 27 that faces the first divided portion 21 in the circumferential direction with the end of the stator abutting portion 45 of the first divided portion 21 that faces the fourth divided portion 27 in the circumferential direction, and this portion is welded together to form a joint 28. The fourth divided portion 27 and the first divided portion 21 are joined together by butting together the end of the end surface portion 41 of the fourth divided portion 27 that faces the first divided portion 21 in the circumferential direction with the end surface portion 41 of the first divided portion 21 that faces the fourth divided portion 27 in the circumferential direction, and this portion is welded together to form a joint 28. The fourth divided portion 27 and the first divided portion 21 are joined together by joint 28 joined together in this manner by welding.

[0053] The first divided portion 21, the second divided portion 22, the third divided portion 26, and the fourth divided portion 27 are configured as a substantially annular frame 15 by joining the first divided portion 21 and the second divided portion 22, joining the second divided portion 22 and the third divided portion 26, joining the third divided portion 26 and the fourth divided portion 27, and joining the fourth divided portion 27 and the first divided portion 21. That is, the first divided portion 21, the second divided portion 22, and the connecting divided portion 25 are joined in the circumferential direction, so that they are formed continuously over one revolution in the circumferential direction, and are configured as a frame 15 that can support the stator core 10 over one revolution.

[0054] In this case, supporting the stator core 10 around one circumference does not mean that the frame 15 is in contact with the stator core 10 around one circumference, but rather means that the frame 15 supports the stator core 10 so that the relative radial movement of the stator core 10 with respect to the frame 15 can be restricted in any direction around one circumference of the stator core 10.

[0055] After joining the individual segments 20 to form an integrated frame 15, the entire frame 15 is annealed. This improves machinability and removes residual stress to prevent cracking. After annealing the frame 15, the portion of the frame 15 that supports the stator core 10 is then machined. That is, the first segment 21, the second segment 22, the third segment 26, and the fourth segment 27 are all formed by casting, and therefore have low dimensional accuracy. For this reason, machining the portion of the frame 15 that supports the stator core 10 ensures that the stator core 10 can be properly supported.

[0056] Specifically, turning is performed on support portions 40a, which are portions of the outer casing 40 of the frame 15 that come into contact with the outer peripheral surface 11 of the stator core 10. That is, when the frame 15 supports the stator core 10, the outer casing 40, which is the portion of the frame 15 that covers the outer peripheral surface 11 of the stator core 10, comes into substantial contact with the outer peripheral surface 11 of the stator core 10 at support portions 40a located at several points in the circumferential direction of the stator core 10. For this reason, the support portions 40a, which come into contact with the outer peripheral surface 11 of the stator core 10, are turned on the outer casing 40 of the frame 15.

[0057] The stator abutment portion 45 of the frame 15 is also turned. That is, by joining the divided portions 20, the stator abutment portions 45 formed on the respective divided portions 20 are joined together, and the stator abutment portion 45 becomes a single plate-like shape with a hole formed in the center. By turning the surface of the stator abutment portion 45 formed in this way, which abuts against the stator core 10, i.e., the surface facing the end face portion 41, the surface irregularities are removed as much as possible to form a flat surface.

[0058] In addition, turning is also performed on end face portions 41 of frame 15. When frame 15 supports stator core 10, pressing member 60 is joined to the inner end portion in the radial direction of end face portion 41, i.e., the portion formed in an arc shape. For this reason, by turning the inner end portion in the radial direction of end face portion 41, the precision of the portion joined to pressing member 60 is ensured.

[0059] FIG. 5 is an explanatory diagram showing the state in which the stator core 10 is inserted into the frame 15. After the frame 15 has been processed, the stator core 10 is inserted into the frame 15. The stator core 10 is inserted into the frame 15 from the side where the end face portion 41 is located. In other words, the end face portion 41 of the frame 15 is formed in the shape of a part of a circle whose radially inner portion has a diameter larger than the outer diameter of the stator core 10, so that the stator core 10 can pass through the radially inner side of the end face portion 41. The stator core 10 is inserted into the frame 15 by passing through the radially inner side of the end face portion 41 in this way.

[0060] The stator core 10 inserted inside the frame 15 has its axial end abutted against the stator abutment portion 45. That is, the diameter of the hole formed in the stator abutment portion 45 is larger than the inner diameter of the stator core 10 and smaller than the outer diameter of the stator core 10, so that the axial end of the stator core 10 abuts against the stator abutment portion 45 without passing through the hole formed in the stator abutment portion 45.

[0061] Here, the distance in the axial direction between end face portion 41 and stator abutment portion 45 of stator core 10 is approximately the same as the axial length of stator core 10. Therefore, when stator core 10 abuts against stator abutment portion 45, the end portion of stator core 10 in the axial direction opposite the side abutting against stator abutment portion 45 is located near the surface of end face portion 41 on the side facing stator abutment portion 45 in the axial direction.

[0062] The stator core 10 inserted inside the frame 15 abuts against the stator abutment portion 45, and the stator abutment portion 45 restricts the movement of the stator core 10 in the axial direction toward the position of the stator abutment portion 45.

[0063] Furthermore, when the stator core 10 is inserted inside the frame 15, the outer peripheral surface 11 of the stator core 10 is supported at multiple points in the circumferential direction by support portions 40a of the outer casing 40 of the frame 15. That is, after the stator core 10 is inserted inside the frame 15, the support portions 40a of the outer casing 40 are welded to the outer peripheral surface 11 of the stator core 10. As a result, the support portions 40a of the outer casing 40 come into contact with the outer peripheral surface 11 of the stator core 10 via the welded portions and support the outer peripheral surface 11 of the stator core 10. When the support portions 40a of the outer casing 40 are welded to the outer peripheral surface 11, radial movement of the stator core 10 relative to the frame 15 is restricted by the support portions 40a, which are portions of the outer casing 40 of the frame 15 that support the stator core 10.

[0064] After the stator core 10 is inserted inside the frame 15, the pressing members 60 are welded to the end surface portions 41 formed on each of the first divided portion 21, the second divided portion 22, the third divided portion 26, and the fourth divided portion 27 that make up the frame 15 (see FIG. 1). In this way, the pressing members 60 are joined to the end surface portions 41.

[0065] When joining the pressing member 60 to the end surface portion 41, the outer periphery of the pressing member 60 is welded to the end surface portion 41 while the pressing member 60 is being pressed in a direction pressing the pressing member 60 against the stator core 10. That is, when attaching the pressing member 60 to the end surface portion 41, the outer periphery of the pressing member 60 is welded to the end surface portion 41 while the pressing member 60 is being pressed against the stator core 10 and the stator core 10 is being pressed against the stator abutment portion 45.

[0066] As a result, stator core 10 is supported from both axial sides of stator core 10 by stator abutment portion 45 and pressing member 60, with pressure being applied from both axial sides of stator core 10 to sandwich it. With one axial end of stator core 10 supported by stator abutment portion 45 in this way, pressing member 60 against stator core 10 restricts frame 15 from moving in the axial direction relative to frame 15 by stator abutment portion 45 and pressing member 60.

[0067] After inserting the stator core 10 into the frame 15 and supporting the stator core 10 on the frame 15, the other components constituting the rotating machine 1 are attached to complete the assembly of the rotating machine 1. The assembled rotating machine 1 is attached to a mounting portion 100 of a bogie of a railway vehicle by attaching a mounting member 30 to the mounting portion 100. Of the mounting members 30, a first mounting member 31 is brought into contact with the top surface of the mounting portion 100, and the first mounting member 31 is joined to the mounting portion 100 using bolts. Of the mounting members 30, a second mounting member 34 is brought into contact with the side surface of the mounting portion 100, and the second mounting member 34 is joined to the mounting portion 100 using bolts. In this way, the mounting member 30 is attached to the mounting portion 100, and the rotating machine 1 is installed on the bogie of the railway vehicle.

[0068] At this time, the first divided portion 21 is coupled to the second divided portion 22 and the fourth divided portion 27 at a position circumferentially spaced from the first mounting member 31. When the rotating machine 1 is mounted on the mounting portion 100 and driven, large stress is generated in the first divided portion 21 at the portion of the first mounting member 31. However, the joint portions 28 at which the first divided portion 21 is coupled to the second divided portion 22 and the fourth divided portion 27 are spaced from the first mounting member 31 in the circumferential direction. Therefore, large stresses associated with mounting the first mounting member 31 to the mounting portion 100 are unlikely to be generated in the joint portions 28 between the first divided portion 21 and the second divided portion 22 and the joint portions 28 between the first divided portion 21 and the fourth divided portion 27. As a result, the first divided portion 21 is firmly coupled to the second divided portion 22 and the fourth divided portion 27 at the joint portions 28.

[0069] Similarly, the second divided portion 22 is coupled to the first divided portion 21 and the third divided portion 26 at a position circumferentially spaced from the second mounting member 34. When the rotating machine 1 is mounted on the mounting portion 100 and driven, large stress is generated in the second divided portion 22 at the portion of the second mounting member 34. However, the joint portions 28 where the second divided portion 22 is coupled to the first divided portion 21 and the third divided portion 26 are spaced from the second mounting member 34 in the circumferential direction. Therefore, large stresses caused by mounting the second mounting member 34 to the mounting portion 100 are unlikely to be generated in the joint portions 28 between the second divided portion 22 and the first divided portion 21 and the joint portions 28 between the second divided portion 22 and the third divided portion 26. As a result, the second divided portion 22 is firmly coupled to the first divided portion 21 and the third divided portion 26 at the joint portions 28.

[0070] The rotating machine 1 is attached to the mounting portion 100 by attaching the mounting member 30 of the frame 15 to the mounting portion 100 as described above. In this embodiment, however, multiple molds are prepared for casting the first divided portion 21 and the second divided portion 22 depending on the shape of the mounting portion 100 to which the rotating machine 1 may be attached.

[0071] 6 is a plan view showing a different form of the first mounting member 31 provided in the first divided section 21. FIG. 7 is a front view showing a different form of the second mounting member 34 provided in the second divided section 22. When the form of the mounting section 100 is different, the form of the mounting member 30 that mounts the rotating machine 1 to the mounting section 100 must be matched to the mounting section 100. For example, when the positions of the bolt holes and screw holes formed in the mounting section 100 in the axial direction of the stator core 10 differ from the positions of the bolt holes and screw holes formed in the mounting section 100 to which the mounting member 30 shown in FIG. 2 etc. is attached, the shape of the mounting member 30 must be matched to the mounting section 100.

[0072] In this case, the width of the first mounting member 31 provided in the first divided section 21 in the axial direction of the stator core 10 is made larger than the distance between the end face portion 41 and the stator abutment portion 45, as shown in Fig. 6 as an example. Similarly, the width of the second mounting member 34 provided in the second divided section 22 in the axial direction of the stator core 10 is made larger than the distance between the end face portion 41 and the stator abutment portion 45, as shown in Fig. 7 as an example.

[0073] The molds used to cast the first divided portion 21 and the second divided portion 22 are prepared as follows: one capable of forming the mounting member 30 shown in Figure 2 etc., and one capable of forming the mounting member 30 shown in Figures 6 and 7. As described above, in this embodiment, a plurality of molds are prepared to be used to cast the first divided portion 21 and the second divided portion 22 having the mounting member 30, in accordance with the mounting portion 100 to which the rotating machine 1 may be attached, and the frame 15 is manufactured by casting the first divided portion 21 and the second divided portion 22 using a mold corresponding to the specifications of the mounting portion 100 to which the rotating machine 1 will be attached.

[0074] Furthermore, if the safety nose 37 for preventing the rotating machine 1 from falling is expected to have multiple shapes depending on the shape of the member with which the safety nose 37 abuts, multiple molds are prepared for use in casting the fourth divided section 27, one for each different shape of the safety nose 37. If multiple shapes of the safety nose 37 are expected, multiple molds are prepared for use in casting the fourth divided section 27, one for each different shape of the safety nose 37, and the frame 15 is manufactured by casting the fourth divided section 27 using a mold corresponding to the shape of the member with which the safety nose 37 abuts.

[0075] In the rotating machine 1 according to the above embodiment, the frame 15 is divided at least in the circumferential direction of the stator core 10 to form multiple divided sections 20. The first mounting member 31 and the second mounting member 34, which are independently attached to the mounting portion 100 to which the rotating machine 1 is attached, are arranged in different divided sections 20. Furthermore, these multiple divided sections 20 are individually cast and joined in the circumferential direction, resulting in a shape that is continuously formed around the entire circumference, enabling the stator core 10 to be supported around the entire circumference. This allows the size of each component to be cast to be reduced, facilitating casting and improving manufacturability when manufacturing components by casting. Furthermore, when manufacturing the frame 15, the frame 15 is assembled alone without using the stator core 10. This allows the frame 15 to be manufactured without having to align the components arranged around the stator core 10 one by one with respect to the stator core 10.

[0076] Furthermore, when manufacturing the frame 15, the divided portions 20 are cast using a mold capable of forming the first mounting member 31 and the second mounting member 34 that match the specifications of the mounting portion 100 to which the rotating machine 1 is attached. This makes it possible to form the frame 15 having the first mounting member 31 and the second mounting member 34 that match the specifications of the mounting portion 100 to which the rotating machine 1 is attached. As a result, even if there are multiple specifications for the mounting portion 100 to which the rotating machine 1 may be attached, the divided portions 20 can be cast using a mold that matches the mounting portion 100 and the cast divided portions 20 can be joined together to easily accommodate mounting portions 100 with different specifications. As a result, the rotating machine 1 according to this embodiment can improve the manufacturability of the frame 20.

[0077] Furthermore, because the first mounting member 31 and the second mounting member 34, i.e., the mounting member 30, are formed integrally with the divided portion 20 by casting, it is possible to easily ensure the strength of the mounting member 30. This makes it possible to ensure the strength of the mounting member 30 without providing a reinforcing member for the mounting member 30, and the bolt holes 32 and screw holes 35 formed in the mounting member 30 can be formed at positions corresponding to the mounting portion 100.

[0078] That is, when the mounting member 30 is provided by welding a plate material or the like to the frame 15, it may be necessary to reinforce the mounting member 30 with a reinforcing member made of a plate material or the like in order to ensure the strength of the mounting member 30. In this case, there are restrictions on the positions of the bolt holes used to attach the mounting member 30 to the mounting part 100 to which the rotating machine 1 is attached, and this may make it difficult to make the mounting member 30 attachable to the mounting part 100 in accordance with various mounting parts 100.

[0079] In contrast, in this embodiment, the mounting member 30 is formed integrally with the divided portion 20 by casting, so the strength of the mounting member 30 can be ensured without providing a reinforcing member. This allows the bolt holes 32 and screw holes 35 formed in the mounting member 30 to be formed at positions corresponding to the mounting portion 100 without being obstructed by a reinforcing member. Therefore, the bolt holes 32 and screw holes 35 formed in the mounting member 30 can be easily formed at positions corresponding to the mounting portion 100. As a result, manufacturability can be further improved.

[0080] Furthermore, when manufacturing frame 15, frame 15 is assembled alone, so annealing can be performed on frame 15 alone. In other words, if frame 15 is manufactured by welding multiple members that make up frame 15 while arranging them around stator core 10, frame 15 will already be in a state of supporting stator core 10 when assembled. Since stator core 10 uses electromagnetic steel sheets, it cannot be annealed in the same way as the material that makes up frame 15, so after frame 15 is assembled, it becomes difficult to anneal frame 15 that supports stator core 10 for the purpose of removing residual stress, etc.

[0081] In contrast, in this embodiment, the frame 15 is assembled alone before the stator core 10 is supported by the frame 15, so that annealing of the frame 15 can be easily performed on the frame 15 alone. As a result, productivity can be further improved.

[0082] Each divided section 20 has a stator abutment section 45 that abuts against an end of the stator core 10 in the axial direction, and a pressing member 60 that abuts against the stator core 10 is joined to the end face section 41 of each divided section 20 from the side opposite to the side of the stator core 10 that abuts against the stator abutment section 45. This makes it possible to appropriately restrict relative axial movement of the stator core 10 with respect to the frame 15 simply by welding the pressing member 60 to the end face section 41 while applying pressure to the stator core 10 in the direction of abutment against the stator abutment section 45. As a result, it is possible to improve the manufacturability of the frame 15 that appropriately supports the stator core 10.

[0083] The frame 15 is divided into at least three parts in the circumferential direction, including a first divided part 21 in which the first mounting member 31 is disposed, a second divided part 22 in which the second mounting member 34 is disposed, and a connecting divided part 25 in which the safety nose 37 is disposed. As a result, even if multiple safety noses 37 with different shapes are expected depending on the shape of the component with which the safety nose 37 will come into contact, the connecting divided part 25 can be cast using a mold that can form an appropriate safety nose 37, and the multiple cast divided parts 20 can be joined together to easily accommodate the shape of the component with which the safety nose 37 will come into contact. As a result, the manufacturability of the frame 20 can be further improved.

[0084] Furthermore, since the connecting division 25 has the third division 26 and the fourth division 27 that support different positions in the circumferential direction of the outer circumferential surface 11 of the stator core 10, when the members that make up the frame 15 are manufactured by casting, the size of each member to be cast can be made smaller. This makes casting easier, and therefore improves manufacturability when manufacturing members by casting. As a result, manufacturability can be further improved.

[0085] [Variations] In the embodiment described above, the segments 20 of the frame 15, which are individually cast, are joined together by welding. However, the segments 20 may be joined together by a method other than welding. FIG. 8 is an explanatory diagram showing a modified example of the frame 15 according to the embodiment, and is a perspective view of the frame 15 in which the segments 20 are joined together by bolts. FIG. 9 is a detailed view of portion A in FIG. 8. The segments 20 of the frame 15 may be joined together at joining portions 28 using bolts 75 and nuts 76. For example, as shown in FIG. 8, the first segment 21 and the fourth segment 27, and the second segment 22 and the third segment 26, which constitute the frame 15, may be joined together using bolts 75 and nuts 76.

[0086] When the segments 20 are joined together using bolts 75 and nuts 76, a joining member 70 is placed, for example, at the portion where the circumferential end of the first segment 21 abuts against the circumferential end of the fourth segment 27, and at the portion where the circumferential end of the second segment 22 abuts against the circumferential end of the third segment 26. The joining member 70 is formed from a plate-like or block-like member having holes formed therein through which the bolts 75 pass. The joining member 70 is placed between the end face portion 41 and the stator abutment portion 45 of each segment 20.

[0087] That is, in the first divided section 21, a coupling member 70 is arranged at each end of the end face portion 41 and the stator abutting portion 45 on the fourth divided section 27 side, and in the fourth divided section 27, a coupling member 70 is arranged at each end of the end face portion 41 and the stator abutting portion 45 on the first divided section 21 side, at positions facing the coupling member 70 of the first divided section 21. In addition, in the second divided section 22, a coupling member 70 is arranged at each end of the end face portion 41 and the stator abutting portion 45 on the third divided section 26 side, and in the third divided section 26, a coupling member 70 is arranged at each end of the end face portion 41 and the stator abutting portion 45 on the second divided section 22 side, at positions facing the coupling member 70 of the second divided section 22.

[0088] Each of these connecting members 70 has a bolt hole (not shown) formed in both connecting members 70, through which a bolt 75 can pass through the connecting members 70 formed in both dividing sections 20 when the ends of the dividing sections 20 having the connecting members 70 are butted together.

[0089] When joining the divided sections 20, with the ends of the divided sections 20 having the joining members 70 butted together, a bolt 75 is passed from the joining member 70 on one of the divided sections 20 through a bolt hole formed in the joining member 70, and a nut 76 is screwed onto the bolt 75 exposed from the bolt hole of the other joining member 70 and tightened. In this way, a force is applied by the bolt 75 and the nut 76 to the divided sections 20 whose ends are butted together in a direction that brings them closer together, and the divided sections 20 are joined together at the joining section 28.

[0090] Specifically, the first divided portion 21 and the fourth divided portion 27 are joined by joining a connecting member 70 arranged on the end face 41 of the first divided portion 21 to a connecting member 70 arranged on the end face 41 of the fourth divided portion 27 with a bolt 75 and a nut 76, and by joining a connecting member 70 arranged on the stator abutment portion 45 of the first divided portion 21 to a connecting member 70 arranged on the stator abutment portion 45 of the fourth divided portion 27 with a bolt 75 and a nut 76. In addition, the second divided portion 22 and the third divided portion 26 are joined by joining the connecting member 70 arranged on the end face portion 41 of the second divided portion 22 to the connecting member 70 arranged on the end face portion 41 of the third divided portion 26 with a bolt 75 and a nut 76, and by joining the connecting member 70 arranged on the stator abutment portion 45 of the second divided portion 22 to the connecting member 70 arranged on the stator abutment portion 45 of the third divided portion 26 with a bolt 75 and a nut 76.

[0091] The joining of the divided parts 20, which are individually cast in the frame 15, at the joint 28 may be performed using bolts 75 and nuts 76, as shown above, or by welding, and the method for joining the divided parts 20 together is not important.

[0092] Furthermore, in the above-described embodiment, the connecting and dividing portion 25 has the third divided portion 26 and the fourth divided portion 27, but the connecting and dividing portion 25 does not have to have the third divided portion 26 and the fourth divided portion 27. For example, the connecting and dividing portion 25 may be formed as a single unit rather than being divided into multiple parts. The configuration of the connecting and dividing portion 25 is not important as long as the frame 15 has at least the first divided portion 21 having the first mounting member 31, the second divided portion 22 having the second mounting member 34, and the connecting and dividing portion 25 disposed between the first divided portion 21 and the second divided portion 22 at the end opposite the end where the first divided portion 21 and the second divided portion 22 are joined.

[0093] Furthermore, in the above-described embodiment, the frame 15 has a safety nose 37 that is a member for preventing the rotating machine 1 from falling, but the frame 15 does not have to have a safety nose 37. In this case, the divided portion 20 where the first mounting member 31 or the second mounting member 34 is not arranged may or may not be divided into individual divided portions 20. The frame 15 has a plurality of divided portions 20 by being divided into at least two in the circumferential direction, and it is sufficient that the first mounting member 31 and the second mounting member 34 are arranged in different divided portions 20.

[0094] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0095] 1 Rotating machine 10 Stator core 11 Outer surface 15 frames 20 Division 21 1st division 22 Second division 25 Connecting division part 26 Third division 27 4th division 28 Joint 30 Mounting material 31 first mounting member 31a, 34a Mounting surface 32 bolt holes 34 Second mounting member 35 screw holes 37 Safety Nose 40 Outer Wall 40a Support part 40b Outer shell isolation part 41 End section 45 Stator contact part 60 Retaining member 70 Connecting member 75 volts 76 Nut 100 Mounting part 110 axles

Claims

1. a stator core formed in a cylindrical shape; a frame having an outer shell portion disposed radially outside the stator core, the width of the stator core in the axial direction being substantially the same as the length of the stator core in the axial direction; a stator abutment portion which is plate-shaped and has a thickness direction oriented in the axial direction and is disposed at one end of the outer shell portion in the axial direction; an end face portion which is plate-shaped and has a thickness direction oriented in the axial direction and is disposed at the other end of the outer shell portion in the axial direction at a position radially outside the position of the outer peripheral surface of the stator core; a first mounting member having a mounting surface for a mounting portion which is another member for mounting a rotating machine; and a second mounting member having a mounting surface for the mounting portion which is formed independent of the mounting surface of the first mounting member; Equipped with the stator abutment portion has a hole formed therein that is larger than an inner diameter of the stator core, and abuts against an end of the stator core in the axial direction; the frame is divided into at least two parts in a circumferential direction about an axis of the stator core, thereby forming a plurality of divided parts, and the first mounting member and the second mounting member are disposed in different divided parts, each of the divided portions has the outer shell portion, the stator abutment portion, and the end surface portion, and at least the respective stator abutment portions are coupled to each other in the circumferential direction, thereby forming the frame continuously over one circumference in the circumferential direction; a rotating machine, wherein a pressing member is coupled to the end face portion, the pressing member being formed in an annular shape with an inner diameter larger than the inner diameter of the stator core, and contacting the end of the stator core from the side opposite to the side contacting the stator contact portion in the axial direction, thereby restricting axial movement of the stator core.

2. the frame is divided into at least three parts in the circumferential direction, and each part is a first divided part, a second divided part, and a connecting divided part, each of which constitutes a part of the frame in the circumferential direction; the first attachment member is disposed on the first divided portion, the second mounting member is disposed on the second divided portion, The rotating machine according to claim 1, wherein a fall prevention member is disposed on the connecting and dividing portion so as to protrude radially outward from the connecting and dividing portion and to prevent the rotating machine from falling by abutting against a member other than the rotating machine and the mounting portion when the first mounting member and the second mounting member are detached from the mounting portion.

3. the connecting division portion is divided into two in a circumferential direction about the axis of the stator core, and includes a third division portion and a fourth division portion, each of which constitutes a part of the frame in the circumferential direction; 3. The rotating machine according to claim 2, wherein the third divided portion and the fourth divided portion each have the outer shell portion and the stator abutment portion, and are formed continuously in the circumferential direction by at least each of the stator abutment portions being connected to each other in the circumferential direction.

Images