JP5256890B2 - Rotating machine holding device and balance correcting device - Google Patents

Description

  The present invention relates to a rotary machine holding device and a balance correcting device.

On the occasion of rotation of a turbocharger, a turbo compressor, a gas turbine or the like, the rotation balance is corrected. The conventional rotation balance correction will be described using a turbocharger as an example.
A supercharger is a device that supplies compressed air to an engine by using exhaust gas energy of an engine mounted on a vehicle or a ship. The turbocharger includes a turbine blade that is rotationally driven by engine exhaust gas, a compressor blade that rotates integrally with the turbine blade, a rotating shaft that is coupled to the turbine blade at one end and the compressor blade to the other end. Have Compressed air is supplied to the engine by the rotation of the compressor blades.

  Conventionally, before the turbocharger is shipped as a product, the rotational balance is corrected. The rotation balance is corrected by at least partially removing a removal target portion (for example, a fixed object such as a nut fixed to the rotation shaft) that is a portion that rotates integrally with the rotation shaft on the turbine blade side or the compressor side. To do. The removal processing position and the removal processing amount in the removal target portion are determined based on data obtained by measuring the rotational unbalance amount in a state where the supercharger is rotated at a high speed. Such a rotation unbalance correction of the supercharger is described in Patent Documents 1 and 2 below, for example.

In the removal process, the boss of the rotating shaft (portion protruding in the axial direction) is supported on the turbine blade side or the compressor blade side, and the removal target portion is removed on the opposite side (compressor blade side or turbine blade side). I was processing. Therefore, during the removal process, the rotating shaft is cantilevered such that it is supported on the turbine blade side or the compressor blade side where the removal process is not performed.
JP 2002-39904 A JP-A-2005-207805

  In the conventional removal process, since the rotating shaft is cantilevered as described above, there is a problem that the removal process cannot be performed with high accuracy. That is, the rotating shaft of the supercharger is supported by a bearing incorporated in the supercharger, but there is a certain amount of play (backlash) between the bearing and the rotating shaft. The rotation axis is displaced in the radial direction by the amount of play. Further, the play has individual differences for each supercharger. In addition, the play occurs also in the direction of rotation of the rotating shaft. For this reason, the removal processing amount and the direction in which the removal processing is performed cannot be strictly controlled, and it is difficult to perform high-precision removal processing. As a result, the number of times of removal processing is increased, and the production cycle of the supercharger may be significantly deteriorated.

  The present invention has been made in view of such circumstances, and can hold a rotating shaft in a rotating machine such as a turbocharger, a turbo compressor, and a gas turbine in a state that does not cause backlash in the radial and rotating directions. It is an object of the present invention to provide a rotating machine holding device and a balance correcting device that enables high-accuracy balance correcting processing by including the rotating machine holding device.

The present invention employs the following configuration in order to solve the above problems.
A rotating machine holding device according to the present invention includes a rotating shaft support portion that contacts a part of a rotating shaft of a rotating machine having a wing portion and supports the rotation of the rotating shaft, and the rotating shaft in the rotating shaft support portion. And a wing portion abutting portion that abuts against the wing portion so as to maintain the abutting state.

In the turbocharger, it is preferable that the blade contact portion is configured to be able to advance and retract with respect to the rotating shaft support portion.

In the turbocharger, it is preferable that the rotation shaft includes a plurality of the wing portions and includes a gap detection unit that detects gaps between the plurality of the wing portions .

  In the turbocharger, it is preferable that the blade contact portion is rotatable coaxially with the rotation shaft support portion.

In the above turbocharger, wherein the wing portions abutting portion and the rotary shaft support portion, is preferably rotatable in the same direction in a state where each other is synchronized.

A balance correction apparatus according to the present invention is a balance correction apparatus that corrects the rotational balance of a rotating machine by at least partially removing an object to be removed that is a part that rotates integrally with a rotating shaft of the rotating machine. And a processing device that performs removal processing on the object to be removed in a state where the rotary shaft of the rotary machine is fixed by the rotary machine holding device.

According to the rotating shaft holding device of the present invention, the rotating machine can be reliably held in a state in which the rotating shaft support part and the blade contact part do not rattle the radial or rotating direction of the rotating shaft.
In addition, according to the balance correction device of the present invention, the removal processing is provided by including the rotating machine holding device that securely holds the rotating machine in a state in which the backlash is not generated in the radial direction and the rotating direction of the rotating shaft as described above. It is possible to prevent rattling from occurring between the rotating shaft and the rotating shaft support portion. Thereby, the removal process accompanying balance correction can be performed with high accuracy. In addition, the holding device can hold the rotating shaft in a state where no play occurs, and at the same time, the processing resistance by the removal device is added to prevent the radial position and rotational direction from becoming unstable during processing due to play. be able to.
Therefore, the accuracy of indexing and removal processing can be improved, and as a result, the number of times these can be performed can be greatly reduced, and the rotational machine production efficiency is improved when the balance of the rotating machine is corrected before shipment. Can be made.

  Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.

  FIG. 1 is a diagram showing a schematic configuration of a balance correction apparatus 10 for a rotary machine according to an embodiment of the present invention. In the present embodiment, a supercharger is illustrated as an example of a rotating machine. In FIG. 1, reference numeral 80 indicates a turbocharger that is rotationally driven by exhaust gas from the engine, reference numeral 3 indicates a turbine blade of the supercharger 80, and reference numeral 5 indicates an integral part of the turbine blade 3. Rotating compressor blades are shown. Reference numeral 7 denotes a rotating shaft to which the turbine blades 3 are coupled at one end and the compressor blades 5 are connected to the other end. Reference numeral 8 denotes a turbine housing. Reference numeral 15 denotes a rotating shaft. Reference numeral 17 denotes a bearing that is supported in the radial direction, and reference numeral 17 denotes a bearing housing to which the bearing is fixed.

  As shown in FIG. 1, the balance correcting device 10 corrects the rotational balance of the rotating body portion in which the rotating shaft 7, the turbine blade 3, and the compressor blade 5 in the supercharger 80 are assembled so as to be integrally rotatable. It is a device to do. Specifically, the balance correction device 10 performs rotation balance correction by at least partially removing the removal target portion 1 that is a portion that rotates integrally with the rotation shaft 7. FIG. 8 is a view taken in the direction of the arrows VV in FIG. In the present embodiment, the removal target portion 1 is a nut fixed to the other end portion 7 a of the rotating shaft 7.

  In the balance correction device 10, a holding device (rotary machine holding device) 9 for holding the supercharger 80 and a processing device 13 for removing the removal target portion 1 are installed on a base 27. A supercharger 80 is attached to the base 27.

  The holding device 9 can hold one end side (hexagon nut 70 side) of the rotary shaft 7 of the supercharger 80 without causing rattling as will be described later. The holding device 9 includes a rotating shaft portion 19 that can rotate coaxially with the rotating shaft 7, and a housing portion 43. Further, a rotary shaft support portion 51 that holds the end portion (hexagon nut 70) of the rotary shaft 7 in the inserted state is provided at the distal end portion of the rotary shaft portion 19. The rotating shaft support portion 51 is constituted by a socket having a hexagonal cross section that is slightly larger than the outer shape of the hexagon nut 70 so that the hexagon nut 70 can be inserted. Specifically, as shown in FIG. 5, the hexagon nut 70 has a shape of the inner surface 51 a of the rotary shaft support portion 51 in the hexagon nut 70 in order to enable smooth insertion into the rotary shaft support portion 51. It is configured to be slightly larger than the shape of the outer surface 71.

  Moreover, the rotating shaft support part 51 is supporting in the state which controlled the rotation by contact | abutting to a part of rotation shaft 7 (side surface of the hexagon nut 70). Here, supporting in a state in which the rotation of the rotating shaft 7 is restricted means that the rotating shaft 7 is supported in a state where the rotating shaft 7 does not rotate in the rotating shaft support portion 51 and does not cause backlash.

  Further, the rotating shaft portion 19 is provided with a blade contact portion 55 that contacts the turbine blade 3 so as to maintain the contact state of the rotating shaft 7 in the rotating shaft support portion 51 at the tip portion thereof. That is, the blade contact portion 55 supports the turbine blade 3 so as to maintain a state in which a part of the above-described hexagon nut 70 is in contact with the rotating shaft support portion 51 (details will be described later).

  Further, the balance correction device 10 has a holding device moving means 41 that enables the holding device 9 to move with respect to the rotating shaft 7. The holding device moving unit 41 includes a stage 41 a and a drive unit 41 b that moves the stage 41 a in the axial direction of the rotary shaft 7. In the holding device 9, the casing 43 is fixed to the stage 41 a, so that the holding device 9 can move relative to the rotation shaft 7. For example, a servo motor can be used as the drive unit 41b.

  The processing device 13 performs removal processing on the other end portion 7a of the rotating shaft 7 in a state where the holding device 9 fixes the rotating shaft 7 in the rotating direction on one end side of the rotating shaft 7. It is.

Here, the configuration of the holding device 9 according to an embodiment of the rotating machine holding device of the present invention will be described with reference to the drawings.
FIG. 2 is a view of a cross section in the axial direction of the rotary shaft portion 19 of the holding device 9 as viewed from the vertical direction of the stage 41a. FIG. 3 is a view showing a cross-sectional configuration in a state where the supercharger 80 is held by the holding device 9.

  As shown in FIG. 2, the rotating shaft portion 19 includes a first rotating shaft 52 and a second rotating shaft 53. The first rotating shaft 52 is rotatable coaxially with the rotating shaft 7 of the supercharger 80, and the rotating shaft support portion 51 is attached to one end side. Specifically, the first rotating shaft 52 is rotatably attached to the housing portion 43 by a bearing portion 57 constituted by a bearing or the like. A gear 58 is provided on the other end side of the first rotating shaft 52, and the gear 58 is engaged with the first drive gear 59. Further, the first drive gear 59 is connected to the drive shaft 60 of the servo motor. As a result, the rotation position of the first rotation shaft 52 can be accurately determined by the servo motor and can rotate with respect to the rotation shaft 7.

  In the present embodiment, the second rotating shaft 53 is provided in a state in which the first rotating shaft covers the outer peripheral surface outside of the 52. The second rotary shaft 53 is in a state in which a gear provided at a part of the outer peripheral portion meshes with the second drive gear 62. The second drive gear 62 is connected to the drive shaft 61 of the torque motor.

  Therefore, the 2nd rotating shaft 53 is comprised by the torque motor so that the outer peripheral part of the 1st rotating shaft 52 can be rotated. With the above configuration, the second rotating shaft 53 is configured to be rotatable coaxially with the first rotating shaft 52 and the rotating shaft 7.

  A moving mechanism 65 that allows the second rotating shaft 53 to move in the axial direction with respect to the first rotating shaft 52 is attached to the other end side of the second rotating shaft 53 via a bearing portion 63. It has been. The moving mechanism 65 is composed of, for example, a cylinder.

  The bearing portion 63 allows the second rotating shaft 53 to rotate along the circumferential direction of the first rotating shaft 52, and causes the second rotating shaft 53 to rotate in the first rotation as the moving mechanism 65 moves. It is possible to move along the axial direction of the shaft 52. Therefore, the first rotating shaft 52 functions as a guide member that regulates the movement of the second rotating shaft 53 in the axial direction and the rotation on the same axis.

  Further, the blade contact portion 55 that is in contact with the turbine blade 3 is provided on one end side (supercharger 80 side) of the second rotating shaft 53. Further, the blade contact portion 55 is provided with a gap detecting means 56 for detecting a gap between the turbine blades 3.

  As described above, the first rotating shaft 52 and the second rotating shaft 53 can be rotated in an independent state by controlling the servo motor and the torque motor. Therefore, the blade contact portion 55 and the gap detection means 56 provided on the blade contact portion 55 are rotatable on the same axis with respect to the rotation shaft support portion 51.

  In addition, since the second rotating shaft 53 is movable along the axial direction with respect to the first rotating shaft 52 by the moving mechanism 65 as described above, the wing portion contact portion 55 and the gap The detection means 56 can be moved forward and backward (operation to approach and move away) with respect to the rotating shaft support 51. In the present embodiment, as will be described in detail later, when holding the supercharger 80, the rotating shaft support portion 51 inserts the end portion (hexagon nut 70) of the rotating shaft 7 and a part of the rotating shaft 7. (See FIG. 3).

On the other hand, the blade contact portion 55 is inserted into the gap between the turbine blades 3 and is in contact with the turbine blade 3. The blade contact portion 55 is in contact with the turbine blade 3 so as to maintain the contact state of the rotating shaft 7 in the rotating shaft support portion 51 (see FIG. 3).
In the present embodiment, when the blade contact portion 55 is inserted into the gap between the turbine blades 3 with the above-described configuration, the gap detection unit 56 is rotated with respect to the turbine blade 3 to detect the gap and detect the gap. The blade contact portion 55 can be easily and reliably inserted into the gap.

  In order to hold the rotating shaft 7 of the supercharger 80 by the holding device 9 described above, first, the holding device 9 is moved to the rotating shaft 7 side by the holding device moving means 41. As a result, as shown in FIG. 4A, the hexagon nut 70 provided at the end of the rotating shaft 7 of the supercharger 80 is inserted into the rotating shaft support 51.

When the holding device 9 inserts the hexagon nut 70 into the rotating shaft support 51, the moving mechanism 65 moves the second rotating shaft 53 relative to the first rotating shaft 52 as shown in FIG. 4A. Then, it is moved to the side opposite to the supercharger 80. That is, the blade contact portion 55 and the gap detection means 56 are in a state of being retracted from the rotating shaft support portion 51.
Thereby, when inserting the hexagon nut 70 in the rotating shaft support part 51, it is preventing that the blade | wing part contact part 55 and the clearance gap detection means 56 contact the turbine blade 3. FIG.

  After the hexagon nut 70 is inserted into the rotating shaft support 51, only the second rotating shaft 53 is rotated with the first rotating shaft 52 fixed. At this time, the gap detection unit 56 is rotated relative to the turbine blade 3, and thus the gap detection unit 56 can detect the gap between the turbine blades 3.

  In addition, after inserting the hexagon nut 70 in the rotating shaft support part 51, only the 1st rotating shaft 52 is rotated in the state which fixed the 2nd rotating shaft 53, and hexagonal is provided in the inner surface 51a of the rotating shaft support part 51. You may make it rotate the rotating shaft 7 and the turbine blade 3 by making the outer surface 71 of the nut 70 contact, and rotating the 1st rotating shaft 52 as it is. Even in this case, the turbine blade 3 can be moved relative to the gap detecting means 56, and the gap between the turbine blades 3 can be detected well by the gap detecting means 56.

  After the gap is detected, the second rotating shaft 53 is moved to the turbine blade 3 side by the moving mechanism 65, so that the blade portion abutted on the second rotating shaft 53 is contacted as shown in FIG. The part 55 can be inserted between the turbine blades 3.

6A is a front view from the axial direction of the turbine blade 3 when the blade contact portion 55 is inserted into the gap, and corresponds to a view taken along the line III-III in FIG. .
After inserting the blade contact portion 55 into the gap between the turbine blades 3, as shown in FIG. 6 (b), the second rotating shaft 53 and the blade contact portion 55 attached to the second rotating shaft 53 by a torque motor. Is rotated in the direction of the arrow in the figure. As a result, the blade contact portion 55 is pressed against the turbine blade 3.

As shown in FIG. 5, a gap is generated between the rotating shaft support 51 and the hexagon nut 70. Therefore, when the turbine blade 3 is pressed against the blade contact portion 55, the hexagon nut 70 (rotary shaft 7) rotates in the same direction as the turbine blade 3. Then, as shown in FIG. 6B, the hexagon nut 70 is in a state in which a part of the outer surface 71 abuts against the inner surface 51 a of the rotating shaft support portion 51 and its rotation is restricted.
At this time, the torque motor that drives the blade contact portion 55 continues to generate torque that can maintain the state where the outer surface 71 of the hexagon nut 70 is in contact with the inner surface 51 a of the rotating shaft support portion 51. Specifically, in the present embodiment, the blade contact portion 55 is pressed against the turbine blade 3 with a torque larger than the torque generated in the rotating shaft 7 during removal processing by the processing device 13 described later.
As a result, the holding device 9 can hold the rotating shaft 7 in a state in which the backlash caused by the gap generated between the rotating shaft support 51 and the rotating shaft 7 is offset.

  After inserting the blade contact portion 55 into the gap between the turbine blades 3, the first rotation shaft 52 and the rotation shaft support portion 51 attached thereto are connected to the second rotation shaft 53 and the blade contact portion. The wing portion abutting portion 55 keeps a part of the outer surface 71 of the hexagon nut 70 in contact with the inner surface 51a of the rotating shaft support portion 51 as described above. Good.

Further, in the holding device 9, the blade contact portion 55 and the rotary shaft support portion 51 are synchronized with each other in a state where the blade contact portion 55 is in contact with the turbine blade 3 as described above. It can be rotated in the same direction in the state.
With this configuration, since the rotary shaft 7 is supported in a state in which the play caused by the gap generated between the rotary shaft support 51 and the rotary shaft 7 is canceled, the rotary shaft 7 is held while being held in a rotating state. The index for determining the position (unbalanced position) at which removal processing should be performed in the removal target portion 1 can be performed with high accuracy without error due to backlash.

Next, other components of the balance correction device 10 will be described.
FIG. 7 is a diagram illustrating a configuration of the processing apparatus 13. 7A is a view taken along the line AA in FIG. 1, and FIG. 7B is a view taken along the line BB in FIG. 7A. In addition, the code | symbol 29 in FIG. 7 has shown the pneumatic pressure source which supplies pneumatic pressure to the cylinder chamber 31 of the pneumatic cylinder apparatus 11b.

  As shown in FIG. 7A, the processing device 13 includes a processing tool 13a (for example, using an end mill in this embodiment) that removes the removal target portion 1 at the other end portion 7a of the rotating shaft 7, and this It has a movable portion 13b to which the processing tool 13a is attached, and a drive device 13c that moves the movable portion 13b. In addition to the processing tool 13a, an insertion portion 11a (details will be described later) of the shift prevention device 11 is attached to the movable portion 13b.

  In addition, when the movable portion 13b moves to a predetermined processing position where the processing tool 13a removes the removal target portion 1, the processing tool 13a in the movable portion 13b is inserted so that the insertion portion 11a is inserted into the holding hole 7c. The relative position with respect to the insertion part 11a is set. 7A shows a state in which the holding hole movable portion 13b is moved and the insertion portion 11a of the deviation preventing device 11 is inserted into the holding hole 7c of the rotating shaft 7. FIG.

  Therefore, as shown in FIG. 7C, in the state where the driving device 13c moves the movable portion 13b and the position of the processing tool 13a becomes the position where the removal target portion 1 is removed, the position of the insertion portion 11a is the same. It is a position where it is inserted into the holding hole 7c so that its center coincides with the holding hole 7c. In other words, in a state where the center axis C1 of the insertion portion 11a is inserted into the holding hole 7c so as to coincide with the center axis C2 of the holding hole 7c, the position of the processing tool 13a removes the removal target portion 1. It corresponds to the processing position.

  For example, the driving device 13c moves the movable portion 13b in one axial direction (axial direction of the rotating shaft 7), two axial directions (two horizontal directions including the axial direction of the rotating shaft 7), or three axial directions (horizontal directions orthogonal to each other). It is a device that moves in two directions and a vertical direction (corresponding to three axial directions in the present embodiment). As shown in FIG. 1, the driving device 13 c includes a first driving unit 24 that moves the movable unit 13 b in the first horizontal direction (the left-right direction in FIG. 7, that is, the axial direction of the rotating shaft 7), and the movable unit. And a second drive unit 25 (see FIG. 1) that moves the horizontal direction 13b in a second horizontal direction (direction perpendicular to the paper surface of FIG. 1) perpendicular to the first horizontal direction. Each drive part 24, 25, 26 moves the movable part 13b using a servomotor.

  As shown in FIG. 7, the slippage prevention device 11 includes an insertion portion 11 a that is inserted in the holding hole 7 c of the rotating shaft 7 in the axial direction. That is, the insertion portion 11a is fitted into the holding hole 7c without a gap (play) in the radial direction of the inner surface of the holding hole 7c and the rotary shaft 7. The holding hole 7c opens in the axial direction of the rotating shaft 7 at the tip of the rotating shaft 7, and its cross-sectional shape is tapered.

  On the other hand, the cross-sectional shape of the distal end portion of the insertion portion 11a is tapered so as to match the shape of the holding hole 7c. Accordingly, when the movable portion 13b is moved in the axial direction of the rotary shaft 7 (the direction from right to left in FIG. 7) and the insertion portion 11a is inserted into the holding hole 7c, the insertion is performed with the central axis C2 of the holding hole 7c. Even if the center axis C1 of the part 11a is slightly deviated, the center axis C2 of the holding hole 7c and the center axis C1 of the insertion part 11a can be aligned after the insertion of the insertion part 11a into the holding hole 7c. . At this time, the movable portion 13b is movable in a direction perpendicular to the axial direction of the rotating shaft 7.

  The slip prevention device 11 includes a pressing device 11 b that is provided in the movable portion 13 b and presses the insertion portion 11 a toward the rotation shaft 7. In the present embodiment, in a state where the movable portion 13b moves in the axial direction of the rotation shaft 7 and the insertion portion 11a is inserted into the holding hole 7c, the pressing device 11b faces the insertion portion 11a toward the rotation shaft 7. Pressing. At this time, the insertion portion 11 a is fitted in the holding hole 7 c without any gap in the radial direction of the inner surface of the holding hole 7 c and the rotating shaft 7, whereby the other end portion 7 a of the rotating shaft 7 is connected to the rotating shaft 7. A shift in the radial direction is prevented.

  In the present embodiment, the pressing device 11b is composed of a pneumatic cylinder device. In this case, the insertion portion 11a functions as a piston of the pneumatic cylinder device 11b. The operation of the pneumatic cylinder device 11b will be described. The insertion portion 11a is inserted into the holding hole 7c and hits the rotary shaft 7 before the movable portion 13b reaches the processing position by the driving device 13c. Further, the pneumatic cylinder device 11b is compressed by the movable portion 13b moving forward (moving from the left side to the right side in FIG. 4) in the axial direction. With this compression, the pneumatic cylinder device 11b presses the insertion portion 11a against the rotary shaft 7 while the insertion portion 11a is inserted into the holding hole 7c.

According to the holding device 9 according to the present embodiment, the supercharger 80 can be held in a state in which the rotation shaft 7 is not rattled by the rotation shaft support portion 51 and the blade contact portion 55. Therefore, according to the balance correction device 10 according to the present embodiment, the holding device 9 keeps the rotating shaft 7 free from backlash even while the removal device 1 is being removed by the processing device 13. Can be held. Thereby, the removal process of the removal target part 1 can be performed with high accuracy. Further, the use of the holding device 9 can eliminate an error caused by the backlash between the rotating shaft 7 and the holding portion, and an index for determining a position (an unbalanced position) on which removal processing should be performed in the removal target portion 1. It can be done with high accuracy.
Therefore, the accuracy of indexing and removal processing is improved, and as a result, the number of times of performing these operations can be greatly reduced. When the balance of the supercharger 80 is corrected before shipment, the operation of the supercharger 80 Time can be significantly reduced and production efficiency can be improved.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
In the said embodiment, although it was the structure which presses the said blade part contact part 55 against the turbine blade 3, this invention is not limited to this. For example, it is also possible to comprise a gripping member such as an arm that directly grips the turbine blade 3 as the blade contact portion.

  In the above embodiment, the hexagon nut 70 is inserted into the rotary shaft support 51. However, the hexagon nut 70 can be replaced with various shapes such as a star nut, a square nut, and a triangular nut. Of course, this method is effective for nuts of any shape.

  In the above embodiment, the second rotating shaft 53 and the blade contact portion 55 are disposed on the turbine blade 3 side. However, the second rotating shaft 53 and the blade contact portion 55 are disposed on the compressor blade 5 side. It is also possible to employ a configuration in which the blade contact portion 55 is pressed against the compressor blade 5 so as to maintain the state in which the outer surface 71 of the hexagon nut 70 is in contact with the inner surface 51a of the rotary shaft support portion 51.

  Moreover, in the said embodiment, although the removal object part 1 was a nut fixed to the other end part 7a of the rotating shaft 7, this invention is not limited to this. That is, the removal target portion 1 may be a portion that rotates integrally with the rotating shaft of the rotating machine, and is a fixed object (for example, the other end portion of the rotating shaft 7 of the supercharger) that is fixed to the rotating shaft of the rotating machine. A cylindrical member fixed to 7a) or a part of the rotating shaft of the rotating machine.

  Moreover, in the said embodiment, although the torque motor was illustrated as a means to generate | occur | produce the torque which presses the blade part contact part 55 to the turbine blade 3, an air motor and a hydraulic motor can also be used.

  The rotating machine holding device of the present invention can also be applied to a case where a rotating shaft in another rotating machine such as a turbo compressor or a gas turbine is held in a state where no backlash occurs in addition to the supercharger. In addition, the balance correction device of the present invention can be applied to other rotary machines as described above other than the supercharger as long as the rotation balance is corrected.

It is a figure which shows schematic structure of the balance correction apparatus of a rotary machine. It is a figure which shows the cross section in the axial direction of the rotating shaft part of a holding | maintenance apparatus. It is a figure which shows the cross-sectional structure in the state in which the supercharger was hold | maintained by the holding | maintenance apparatus. It is a figure for demonstrating the positional relationship of a holding | maintenance apparatus and a supercharger. It is a figure which shows the cross-sectional shape of a rotating shaft support part and a hexagon nut. It is a figure for demonstrating the operation | movement which inserts the blade | wing part contact part 55 between turbine blades. It is a figure which shows the structure of a processing apparatus. It is a figure which shows the structure which concerns on the VV arrow of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Removal target part, 3 ... Turbine blade (blade part), 5 ... Compressor blade (blade part), 7 ... Rotating shaft, 9 ... Holding device (rotary machine holding device), 10 ... Balance correction device, 13 ... Processing device , 51 ... Rotating shaft support part, 55 ... Wing part contact part, 56 ... Gap detection means, 80 ... Supercharger (rotary machine)

Claims (6)

A rotating shaft support portion that contacts a part of a rotating shaft of a rotating machine having a wing portion and supports the rotation of the rotating shaft;
A rotating machine holding device comprising: a wing portion abutting portion that abuts against the wing portion so as to maintain a contact state of the rotating shaft in the rotating shaft support portion. The rotary machine holding device according to claim 1, wherein the blade contact portion is configured to be movable back and forth with respect to the rotating shaft support portion. 3. The rotating machine holding device according to claim 1, wherein the rotating shaft includes a plurality of the wing parts, and includes a gap detection unit that detects gaps between the plurality of the wing parts .   The rotary machine holding device according to any one of claims 1 to 3, wherein the blade contact portion is configured to be coaxially rotatable with respect to the rotary shaft support portion. Wherein the wing portions abutting portion and the rotary shaft supporting portion, a rotary machine holding device according to claim 4, characterized in that it is rotatable in the same direction in a state where each other is synchronized. A balance correcting device that corrects the rotational balance of the rotating machine by at least partially removing a removal object that is a part that rotates integrally with the rotating shaft of the rotating machine,
A rotating machine holding device according to any one of claims 1 to 5,
A balance correction device comprising: a processing device that performs a removal process on the object to be removed in a state where the rotary shaft of the rotary machine is fixed by the rotary machine holding device.

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