Vertical Rotating Electric Machine

Abstract

To prevent damage to a vertical rotating electric machine when adjusting a rotor position.SOLUTION: A vertical rotating electric machine 1 includes a housing 5, a stator, a unit 2, a jack post 51, and bolts 52. The unit 2 includes a rotor, a thrust bearing, and a connecting body 140. The connecting body 140 is connected to the housing 5 such that its position can be adjusted in a direction perpendicular to the vertical direction relative to the housing 5. The jack post 51 has a female thread, is supported by the housing 5, and faces the connecting body 140. The bolt 52 is coupled to the female thread so as to be movable in the direction perpendicular to the vertical direction, and is capable of pushing the connecting body 140 in the direction perpendicular to the vertical direction.SELECTED DRAWING: Figure 2

Description

Technical Field

[0006] , The thrust bearing and the oil tank containing the lubricating oil, and via the oil tank ,

[0001] Embodiments of the present invention relate to a vertical rotating electric machine.

Background Art

[0002] Conventionally, a vertical rotating electric machine has been known, which includes a housing, a stator extending in the vertical direction and housed in the housing, a rotor extending in the vertical direction, a thrust bearing that rotatably supports the shaft of the rotor, and a connecting body that supports the thrust bearing and is connected to the housing so as to be position-adjustable. The rotor, the thrust bearing, and the connecting body form a unit.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In this type of vertical rotating electric machine, the alignment between the stator and the rotor is performed, for example, by hitting the connecting body with a hammer to adjust the position of the entire unit including the rotor with respect to the stator. However, hitting the connecting body with a hammer in this way may damage members such as the connecting body.

[0005] An example of the problem solved by the present invention is to be able to suppress damage to the vertical rotating electric machine during the position adjustment of the rotor.

Means for Solving the Problems

[0006] The vertical rotating electric machine according to an embodiment of the present invention includes Having an upper wall a housing, a stator extending in the vertical direction and housed in the housing, a rotor having a shaft extending in the vertical direction and partially inserted into the stator, and a thrust bearing that rotatably supports the shaft The thrust bearing and the oil tank containing the lubricating oil, and via the oil tankA unit having a connecting body that supports the thrust bearing and is connected to the housing so as to be positionable in a direction perpendicular to the vertical direction relative to the housing, and having a female screw, Upper wall It comprises a jack post supported by and facing the connecting body, and a bolt that is connected to the female screw so as to be movable in a direction perpendicular to the vertical direction and capable of pushing the connecting body in a direction perpendicular to the vertical direction. The connecting body has an upper surface, through which a through hole is provided into which the shaft is inserted, and is fixed to the housing by being superimposed on the upper wall on the upper side of the upper wall, and has an annular base plate around the shaft, and a plurality of ribs provided radially on the upper surface of the base plate with respect to the shaft, the oil tank is superimposed on the plurality of ribs on the upper side of the plurality of ribs and fixed to the plurality of ribs, the jack post faces the ribs, and the bolt is capable of pushing against the ribs . [Effects of the Invention]

[0007] According to embodiments of the present invention, for example, damage to a vertical rotating electric machine during rotor position adjustment can be suppressed. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a side view showing a vertical rotating electric machine according to an embodiment. [Figure 2] Figure 2 is a plan view showing a vertical rotating electric machine according to an embodiment. [Figure 3] Figure 3 is a cross-sectional view showing the upper part of a vertical rotating electric machine according to an embodiment. [Figure 4] Figure 4 is an enlarged view of part IV of Figure 3. [Figure 5] Figure 5 is an enlarged view of section V in Figure 4. [Figure 6] Figure 6 is a front view showing the jack post of a vertical rotating electric machine according to an embodiment. [Figure 7] Figure 7 is a side view showing the jack post of a vertical rotating electric machine according to an embodiment. [Modes for carrying out the invention]

[0009] One embodiment is described below. Note that in this specification, the components of an embodiment and their descriptions may be described using multiple expressions. The components and their descriptions are examples and are not limited by the expressions used herein. Component parts may also be identified by names different from those used herein. Furthermore, component parts may also be described using expressions different from those used herein.

[0010] Furthermore, the drawings are schematic, and the dimensional relationships and proportions of each element may differ from reality. Also, there may be differences in dimensional relationships and proportions between drawings. In this specification, ordinal numbers are used solely to distinguish parts, components, locations, directions, etc., and do not indicate order or priority.

[0011] Figure 1 is a side view showing a vertical rotating electric machine 1 according to an embodiment. As shown in Figure 1, the vertical rotating electric machine 1 comprises a housing 5, a stator 6, a rotor 10, a bearing structure 100, and a lower bearing 200. The rotor 10 and the bearing structure 100 are integrated to form a unit 2. The unit 2 is connected to the housing 5.

[0012] In the vertical rotating electric machine 1, the rotor 10 is supported by a thrust bearing 110 and a lower bearing 200, which are upper bearings included in the bearing structure 100, so that it can rotate around the rotational axis Ax relative to the housing 5 and stator 6.

[0013] The rotation center axis Ax is the center of rotation of the shaft 31 of the rotor 10 in the vertical rotating electric machine 1, and is, for example, a virtual straight line passing through the center of the shaft 31. In the present embodiment, the rotation center axis Ax extends along the vertical direction. That is, the shaft 31 extends along the vertical direction. The axial direction, radial direction, and circumferential direction of the rotation center axis Ax are the same as the axial direction, radial direction, and circumferential direction of the rotor 10 (shaft 31). In the following description, unless otherwise specified, the axial direction, radial direction, and circumferential direction are the axial direction, radial direction, and circumferential direction of the rotation center axis Ax, that is, the axial direction, radial direction, and circumferential direction of the shaft 31. Further, the arrow D1 shown in FIG. 1 and the like indicates the upward direction in the vertical direction. Hereinafter, the upward and downward directions in the vertical direction may be simply referred to as the upward and downward directions.

[0014] FIG. 2 is a plan view showing the vertical rotating electric machine 1 according to the embodiment. As shown in FIGS. 1 and 2, the housing 5 has a substantially cylindrical outer shape. The housing 5 includes an upper wall 5a, a lower wall 5b, and a cylindrical portion 5c. The housing 5 is made of, for example, a metal material.

[0015] Both the upper wall 5a and the lower wall 5b are annular disks around the rotation center axis Ax, and are provided substantially parallel to each other with a gap in the vertical direction. The cylindrical portion 5c is formed in a substantially cylindrical shape around the rotation center axis Ax. That is, the cylindrical portion 5c extends in the vertical direction and surrounds the rotation center axis Ax. The cylindrical portion 5c is provided across the upper wall 5a and the lower wall 5b and is fixed to the upper wall 5a and the lower wall 5b.

[0016] As shown in FIG. 2, a plurality of jack posts 51A to 51D are provided on the upper surface 5d of the upper wall 5a. Hereinafter, the jack posts 51A to 51D are collectively referred to as the jack post 51. The jack post 51 and the bolt 52 constitute a position adjusting portion 50 for adjusting the position of the rotor 10 (unit 2). Details of the position adjusting portion 50 will be described later.

[0017] As shown in FIG. 1, the stator 6 has a stator core 21 and a stator winding (not shown). The stator core 21 is formed in a substantially cylindrical shape surrounding the rotation center axis Ax. The stator winding passes through slots provided in the stator core 21 and is attached to the stator core 21.

[0018] The rotor 10 has a shaft 31 and a rotor core 32. The shaft 31 is rotatable about the rotation center axis Ax and is supported by the housing 5 via a thrust bearing 110 and a lower bearing 200. Thereby, the shaft 31 (rotor 10) is rotatable about the rotation center axis Ax with respect to the stator 6.

[0019] The shaft 31 is formed in a substantially cylindrical shape extending along the rotation center axis Ax. The shaft 31 extends across the inside and outside of the housing 5. The shaft 31 has a middle portion 31a and two outer extension portions 31b, 31c.

[0020] The middle portion 31a is a part of the shaft 31 located inside the housing 5. The middle portion 31a is located between the two outer extension portions 31b, 31c. The lower end portion of the middle portion 31a in the axial direction is supported by the lower bearing 200 so as to be rotatable about the rotation center axis Ax.

[0021] The outer extension portions 31b, 31c are parts of the shaft 31 located outside the housing 5. The outer extension portion 31b extends upward from the upper end of the middle portion 31a and protrudes outside the housing 5 from the upper wall 5a. The outer extension portion 31b is supported by the thrust bearing 110 so as to be rotatable about the rotation center axis Ax. The outer extension portion 31c extends downward from the lower end of the middle portion 31a and protrudes outside the housing 5 from the lower wall 5b.

[0022] The outer extension portion 31c is provided with, for example, a flange, a key groove, or a spline and is coupled to an external device so as to be able to transmit rotation. Thereby, the vertical rotating electric machine 1 outputs torque to the external device or inputs torque from the external device.

[0023] The rotor core 32 is coupled (fixed) to the middle portion 31a of the shaft 31. The rotor core 32 is formed in a substantially cylindrical shape surrounding the rotational axis Ax and is located inside the stator core 21 of the stator 6. The rotor core 32 rotates integrally with the shaft 31.

[0024] Figure 3 is a cross-sectional view showing the upper part of the vertical rotating electric machine 1 according to the embodiment. As shown in Figure 3, the bearing structure 100 includes a thrust bearing 110, a journal bearing 120, an oil tank 130, and a connecting body 140 that support the weight of the rotor 10. The bearing structure 100 also includes a ring key 160, a cooling device 162, and temperature sensors 163 and 164.

[0025] The oil tank 130 houses lubricating oil for lubrication and cooling of the thrust bearing 110 and the journal bearing 120. The oil tank 130 has a base 118 and a cover 125. The oil tank 130 is made of, for example, a metal material.

[0026] The base 118 is a bottomed cylindrical shape that is open at the top. More specifically, the base 118 has a lower wall 118a and a cylindrical portion 118b. The lower wall 118a is an annular disc about the rotational axis Ax. The cylindrical portion 118b is formed in a substantially cylindrical shape about the rotational axis Ax. That is, the cylindrical portion 118b extends vertically and surrounds the rotational axis Ax. The cylindrical portion 118b extends upward from the outer peripheral edge of the lower wall 118a. The cylindrical portion 118b is provided radially outside the shaft 31 with a gap between it and the shaft 31. The cover 125 is attached to the upper end of the cylindrical portion 118b of the base 118.

[0027] Lubricating oil is stored in the oil tank 130. The thrust bearing 110 and journal bearing 120 are immersed in the lubricating oil in the oil tank 130.

[0028] The thrust bearing 110 includes a thrust runner 111, a plurality of thrust pads 112, a pad support portion 113, and a base plate 114. In other words, the thrust bearing 110 is a pad-type (tilting pad type) thrust bearing.

[0029] The thrust runner 111 is attached to the outer surface of the shaft 31. The thrust runner 111 has a protruding portion 111m, a runner cylindrical portion 111n, and a lower end portion 111p. The protruding portion 111m is the part fixed to the shaft 31 and, when viewed in plan, protrudes radially from the radially outer side of the base 118, at a position higher than the level of the upper end of the base 118. The thrust runner 111 is also called a thrust collar.

[0030] The runner cylindrical portion 111n is a part that extends downward in a cylindrical shape, continuously below the protruding portion 111m, and is provided on the radially outer side of the base 118. The lower end portion 111p is a part connected to the lower side of the runner cylindrical portion 111n, and its lower surface is formed to be flat. The lower end portion 111p faces the upper surface of the thrust pad 112 of the thrust bearing 110 and is mounted on the upper surface of the thrust pad 112.

[0031] The base plate 114 is formed in the shape of an annular disc that surrounds the shaft 31. The base plate 114 is fixed to the bottom of the base 118.

[0032] The pad support section 113 is mounted on the base plate 114. The pad support section 113 has a plurality of support members. The plurality of support members are arranged at intervals in the circumferential direction of the shaft 31. The support members are, for example, bolts, and their height relative to the base plate 114 is adjustable. Note that the base plate 114 and the pad support section 113 are not limited to this shape.

[0033] Multiple thrust pads 112 are mounted on a pad support portion 113 in an annular shape, spaced apart from each other in the circumferential direction. In other words, the pad support portion 113 is located vertically below the thrust pads 112 and supports the multiple thrust pads 112. The multiple thrust pads 112 are arranged radially outward from the shaft 31, spaced apart in the circumferential direction of the shaft 31. One thrust pad 112 is supported by one support member. A temperature sensor 164 is provided on one of the multiple thrust pads 112. The weight of the thrust pads 112 is, for example, 35 kg, but is not limited to this.

[0034] Each thrust pad 112 has a flat upper surface and is constrained to not move in either the radial or circumferential direction. A recess is formed approximately in the center of the lower surface of each thrust pad 112. The upper end of the support member of the pad support section 113 is inserted into the recess. When the lower end 111p of the thrust runner 111 moves circumferentially on the thrust pad 112, the thrust pad 112 is formed to tilt with respect to the horizontal direction in the circumferential direction, and lubricating oil is introduced into the gap between the lower surface of the lower end 111p of the thrust runner 111 and the upper surface of the thrust pad 112. That is, an oil film is formed between the lower surface of the lower end 111p of the thrust runner 111 and the upper surface of the thrust pad 112.

[0035] As a result, when the thrust runner 111 is mounted on the thrust pad 112 and rotates with the rotation of the shaft 31, the upper surface of the thrust pad 112 does not come into close contact with the lower surface of the lower end 111p of the thrust runner 111, but instead becomes tilted with respect to the horizontal direction. Therefore, lubricating oil is guided into the space between the upper surface of the thrust pad 112 and the lower surface of the lower end 111p of the thrust runner 111.

[0036] Between the upper surface of the thrust pad 112 and the lower surface of the lower end portion 111p of the thrust runner 111, the lubricating oil flows from the radially inward to the radially outward due to the centrifugal force caused by the rotation of the thrust runner 111.

[0037] The lower end 111p of the thrust runner 111 is supported by a journal bearing 120. The journal bearing 120 limits the radial displacement of the thrust runner 111 and, consequently, the shaft 31. A temperature sensor 163 is mounted on the journal bearing 120.

[0038] The cooling device 162 is housed in the oil tank 130 and immersed in oil. The cooling device 162 is, for example, an oil cooler and cools the oil.

[0039] As shown in Figure 3, the connecting body 140 is interposed between the oil tank 130 and the upper wall 5a of the housing 5. The connecting body 140 supports the thrust bearing 110 via the oil tank 130. The connecting body 140 is also connected (fixed) to the housing 5 by the fixing part 60 so as to be adjustable in the radial direction, that is, in a direction perpendicular to the vertical direction with respect to the housing 5.

[0040] Figure 4 is an enlarged view showing part IV of Figure 3. As shown in Figures 2 to 4, the connecting body 140 has a base plate 141 and a plurality of ribs 142. The connecting body 140 is made of a metal material. The connecting body 140 is also called a bracket.

[0041] The base plate 141 is an annular disc around the shaft 31, that is, around the rotational axis Ax. The base plate 141 has an upper surface 141a and a lower surface 141b. The base plate 141 is superimposed on the upper wall 5a of the housing 5, and the lower surface 141b is in contact with the upper surface 5d of the upper wall 5a.

[0042] As shown in Figure 3, the base plate 141 is provided with a through hole 141c. The through hole 141c penetrates the upper surface 141a and the lower surface 141b in the central part of the base plate 141. The outer portion 31b of the shaft 31 is inserted into the through hole 141c.

[0043] Furthermore, as shown in Figures 2 and 3, the base plate 141 is provided with a plurality of through holes 141d. The plurality of through holes 141d penetrate the upper surface 141a and the lower surface 141b of the outer periphery of the base plate 141. The plurality of through holes 141d are provided at intervals in the circumferential direction.

[0044] As shown in Figures 2 to 4, multiple ribs 142 are provided on the upper surface 141a of the base plate 141 and protrude upward from the upper surface 141a. The multiple ribs 142 are arranged radially around the shaft 31 (rotational axis Ax). Each rib 142 is fixed to the lower wall 130a of the oil tank 130 by bolts 144. The ribs 142 reinforce the base plate 141. This improves the rigidity and strength of the connecting body 140. The ribs 142 are also referred to as reinforcing parts.

[0045] As shown in Figure 3, the fixing portion 60 has a housing-side fixing portion 5f and a plurality of bolts 143.

[0046] The housing-side fixing portion 5f is provided on the lower surface of the upper wall 5a of the housing 5. The housing-side fixing portion 5f is formed in an annular shape around the rotational axis Ax. Multiple female screws 5h are provided on the housing-side fixing portion 5f. Note that only one female screw 5h is shown in Figure 3. The female screw 5h is provided across the upper wall 5a and the housing-side fixing portion 5f.

[0047] The bolt 143, while inserted into the through hole 141d of the base plate 141, connects (screws) to the female thread 5h of the housing-side fixing part 5f of the housing 5. This fixes the base plate 141 and, consequently, the unit 2 to the housing 5. The diameter of the shaft of the bolt 143 is smaller than the diameter of the through hole 141d. This allows the connecting body 140 and, consequently, the unit 2, to move radially relative to the housing 5 and the stator 6 when the bolt 143 is loose.

[0048] Figure 5 is an enlarged view of section V in Figure 4. As shown in Figure 5, the fixing portion 60 has a recess 141e provided on the lower surface 141b of the base plate 141 and a protrusion 5g provided on the upper surface 5d of the upper wall 5a of the housing 5. The protrusion 5g is fitted into the recess 141e. The recess 141e and the protrusion 5g constitute a spigot joint structure.

[0049] The recess 141e is formed in an annular shape around the shaft 31 and the rotational axis Ax, and is open downwards.

[0050] The protrusion 5g is provided on the upper surface 5d of the upper wall 5a and protrudes upward from the upper surface 5d. The protrusion 5g is formed in an annular shape around the shaft 31 and the rotational axis Ax. The radial width of the protrusion 5g is smaller than the radial width of the recess 141e, and the protrusion 5g and the recess 141e can move relative to each other radially by a predetermined distance. The radial contact between the protrusion 5g and the recess 141e restricts the radial movement of the unit 2 relative to the housing 5.

[0051] When the bolt 143 of the fixing part 60 in the above configuration is loose, the connecting body 140 and thus the unit 2 can move radially relative to the housing 5 and the stator 6. When the unit 2 moves radially relative to the housing 5, the recess 141e comes into contact with the protrusion 5g, thereby restricting the radial movement of the unit 2.

[0052] Next, the position adjustment section 50 will be described. As shown in Figure 2, the position adjustment section 50 has a plurality of jack posts 51 and a plurality of bolts 52. A bolt 52 is provided for each jack post 51. The jack post 51 is also called a support section or plate section.

[0053] Multiple jack posts 51 are arranged at intervals around the rotational axis Ax (shaft 31) on the upper surface 5d of the upper wall 5a. For example, multiple jack posts 51 are arranged at equal intervals around the rotational axis Ax (shaft 31). Specifically, in this embodiment, four jack posts 51A to 51D are arranged at 90° intervals around the rotational axis Ax (shaft 31). Multiple jack posts 51 are fixed to the upper surface 5d of the upper wall 5a by welding. The jack posts 51 may be installed during the manufacture of the vertical rotating electric machine 1, or during maintenance and inspection after shipment. Note that the jack posts 51 may also be fixed to the upper surface 5d of the upper wall 5a by bolts or fittings. The jack posts 51 face the rib 142 of the connecting body 140 on the radially outer side of the rib 142.

[0054] Jack posts 51A and 51C are arranged with a gap between them in a first radial direction (direction of arrow D2) with the shaft 31 in between, forming a set. Jack posts 51B and 51D are arranged with a gap between them in a second direction perpendicular to the first direction (direction of arrow D3) with the shaft 31 in between, forming a set. Jack posts 51A and 51C are examples of the first type of jack post, and jack posts 51B and 51D are examples of the second type of jack post.

[0055] Figure 6 is a front view showing the jack post 51 of the vertical rotating electric machine 1 according to the embodiment. Figure 7 is a side view showing the jack post 51 of the vertical rotating electric machine 1 according to the embodiment.

[0056] As shown in Figures 6 and 7, the jack post 51 has a plate portion 51a and a female screw 51b. The plate portion 51a is formed in the shape of a strip. The plate portion 51a is fixed to the upper surface 5d of the upper wall 5a of the housing 5 in a position where its thickness direction is aligned with the radial direction. The female screw 51b is provided through the plate portion 51a in the thickness direction, i.e., the radial direction.

[0057] As shown in Figure 4, the bolt 52 has a head 52a and a shaft 52b. The shaft 52b extends radially from the head 52a. A male thread 52c is formed on the outer circumference of the shaft 52b. The male thread 52c connects (screws) with the female thread 51b of the jack post 51. The bolt 52 is attached to the jack post 51 such that the male thread 52c of the shaft 52b connects with the female thread 51b with the head 52a positioned radially outward relative to the jack post 51. In this state, the tip 52d of the shaft 52b faces the radially outer surface 142a of the rib 142. By rotating the bolt 52 in one direction, the bolt 52 moves radially inward, strikes the surface 142a of the rib, and pushes against the surface 142a. In other words, the bolt 52 is connected to the female thread 51b so as to be movable in a direction perpendicular to the vertical direction, and is capable of pushing the connecting body 140 in a direction perpendicular to the vertical direction. On the other hand, by rotating the bolt 52 in another direction, the bolt moves radially outward and separates from the surface 142a.

[0058] Next, the method for aligning the stator 6 and the rotor 10 will be explained. Aligning the stator 6 and the rotor 10 is done by adjusting the position of the rotor 10 relative to the stator 6.

[0059] Specifically, first, the worker loosens the bolt 143 to allow the unit 2 to move radially relative to the housing 5.

[0060] Next, the worker attaches each bolt 52 to each jack post 51. The bolts 52 may be attached to the jack posts 51 beforehand. Next, the worker rotates one bolt 52 in one direction and uses the tip 52d of the bolt 52 to press against the surface 142a of the rib 142 of the connecting body 140, thereby moving the unit 2 radially. This operation is performed for each bolt 52 as needed, moving the unit 2 and, consequently, the rotor 10 to the predetermined position relative to the stator 6. As a result, the center of the stator 6 and the center of the rotor 10 coincide, and the distance between the rotor core 32 of the rotor 10 and the stator core 21 of the stator 6 becomes the predetermined distance. After the work is completed, the bolts 52 may remain attached to the jack posts 51, or they may be removed from the jack posts 51 and stored.

[0061] As described above, the vertical rotating electric machine 1 of this embodiment comprises a housing 5, a stator 6, a unit 2, a jack post 51, and a bolt 52. The stator 6 extends vertically and is housed within the housing 5. The unit 2 comprises a rotor 10, a thrust bearing 110, and a connecting body 140. The rotor 10 has a shaft 31 that extends vertically and is partially housed within the stator 6. The thrust bearing 110 rotatably supports the shaft 31. The connecting body 140 supports the thrust bearing 110 and is connected to the housing 5 so as to be positionable in a direction perpendicular to the vertical direction relative to the housing 5. The jack post 51 has a female thread 51b, is supported by the housing 5, and faces the connecting body 140. The bolt 52 is connected to the female thread 51b so as to be movable in a direction perpendicular to the vertical direction, and is capable of pushing the connecting body 140 in a direction perpendicular to the vertical direction.

[0062] With this configuration, the rotor 10 can be positioned relative to the stator 6 by pressing the connecting body 140 with the bolt 52. Therefore, compared to the case where the rotor 10 is positioned by striking the connecting body 140 with a hammer, damage to the connecting body 140 and other components of the vertical rotating electric machine 1 can be suppressed.

[0063] Furthermore, when loosening the bolt 143 and inserting a jack between the cylindrical portion 118b of the oil tank 130 and the bolt 143 to adjust the position of unit 2, there is a risk that the bolt 143 may break due to the weight of unit 2. In contrast, in this embodiment, the connecting body 140 is pressed with the bolt 52, which helps to prevent damage to the components of the vertical rotating electric machine 1.

[0064] Furthermore, in this embodiment, since the connecting body 140 is pressed with the bolt 52, the position of the rotor 10 can be adjusted with greater precision compared to the case where the connecting body 140 is struck with a hammer, thereby improving work efficiency.

[0065] Furthermore, multiple jack posts 51 and bolts 52 are provided. The multiple jack posts 51 include two jack posts 51A and 51C (first jack posts) arranged side by side with the shaft 31 in between, and two jack posts 51C and 51D (second jack posts) arranged in a direction perpendicular to the direction in which the two jack posts 51A and 51C are arranged.

[0066] With this configuration, the position of the rotor 10 can be adjusted with even greater precision.

[0067] In this embodiment, the connecting body 140 has a base plate 141 and a rib 142. The base plate 141 has a vertical upper surface 141a (end face), and a through hole 141c is provided that penetrates the upper surface 141a and into which the shaft 31 is inserted, and it is annular around the shaft 31. The rib 142 is provided on the upper surface 141a. The jack post 51 is opposite the rib 142. The bolt 52 can push the rib 142.

[0068] Here, as the weight of unit 2 increases, the load on the connecting body 140 from the bolts 52 increases. Depending on the weight of unit 2, it is conceivable that the base 41 may bend when the bolts 52 push against the base plate 141 of the connecting body 140. Therefore, in this embodiment, as described above, a rib 142 is provided on the base plate 141 of the connecting body 140 to reinforce the base plate 141, and a configuration is adopted in which the bolts 52 push against the rib 142. This makes it possible to suppress the bending of the base plate 141.

[0069] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of symbols]

[0070] 1...Vertical rotating electric machine, 2...Unit, 5...Housing 5a...upper wall, 6...Stator, 10...Rotor, 31...Shaft, 51...Jack post, 51A, 51C...Jack post (first jack post), 51B, 51D...Jack post (second jack post), 51b...Female thread, 52...Bolt, 110...Thrust bearing 130...oil tank, 140...Connecting element, 141...Base plate, 141a...Top surface (end face), 141c...Through hole, 142...Rib.

Claims

1. A housing having an upper wall, A stator extending vertically and housed within the housing, A unit comprising: a rotor having a shaft extending vertically and partially inserted into the stator; a thrust bearing rotatably supporting the shaft; an oil tank containing the thrust bearing and lubricating oil; and a connecting body that supports the thrust bearing via the oil tank and is connected to the housing so as to be positionable in a direction perpendicular to the vertical direction relative to the housing; A jack post having a female thread, supported by the upper wall, and facing the connecting body, A bolt that is connected to the female screw so as to be movable in a direction perpendicular to the vertical direction, and capable of pushing the connecting body in a direction perpendicular to the vertical direction, Equipped with, The aforementioned connecting body, Having an upper surface, a through hole through the upper surface into which the shaft is inserted is provided, and fixed to the housing by being superimposed on the upper wall above the upper wall, an annular base plate around the shaft, Multiple ribs are provided radially on the upper surface of the base plate with respect to the shaft, It has, The oil tank is placed on top of the plurality of ribs above the plurality of ribs and fixed to the plurality of ribs. The jack post faces the rib, The bolt is capable of pressing the rib. Vertical rotating electric machine.

2. Multiple jack posts and bolts are provided, The plurality of jack posts include two first jack posts arranged with the shaft in between, and two second jack posts arranged in a direction perpendicular to the direction in which the two first jack posts are arranged. The vertical rotating electric machine according to claim 1.

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