WO2021215035A1 - Method for exchanging shaft of rotor - Google Patents
Method for exchanging shaft of rotor Download PDFInfo
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- WO2021215035A1 WO2021215035A1 PCT/JP2020/041554 JP2020041554W WO2021215035A1 WO 2021215035 A1 WO2021215035 A1 WO 2021215035A1 JP 2020041554 W JP2020041554 W JP 2020041554W WO 2021215035 A1 WO2021215035 A1 WO 2021215035A1
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- shaft
- rotor core
- rotor
- hole
- key
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
Definitions
- the present invention relates to a rotor shaft replacement method.
- a rotating machine such as a motor or a generator is composed of a rotor and a stator.
- the rotor is directly connected to the shaft of the load machine at the end of the rotor shaft for power transmission.
- a coupling is used to directly connect the ends of both shafts of the load machine and the rotor.
- the above-mentioned coupling is a mechanism for absorbing the difference in the shape of the shaft end between the rotor and the load machine and directly connecting the shafts to each other. Transmission by tightening such as shrink fitting, or transmission by a spline shaft with the shaft end processed into a gear shape.
- the spline shaft does not involve torque transmission due to tightening, it is less likely that scratches will occur due to work during direct disassembly for maintenance, etc., compared to torque transmission due to shrink fitting, but spline lubrication is required during operation. Therefore, the shaft is often scratched due to other causes such as poor lubrication.
- the rotor of a rotor generally has a structure in which a hole is made in the center of a rotor core made of laminated electromagnetic steel plates or the like, and a shaft is placed in this hole, and the torque generated by the rotor core is used as the shaft.
- the hole in the center of the rotor core and the shaft are fixed by shrink fitting or the like.
- the rotor core is configured with the shaft as the core, the rotor core in which electromagnetic steel sheets are laminated cannot maintain its shape as a rotor even if the shaft is removed by boring or the like, and may be deformed. There is.
- Patent Document 1 can be mentioned as a prior art document relating to shaft replacement of a rotating machine.
- Patent Document 1 a screw hole for fastening is formed at an end of a rotary machine shaft, and a ball screw is assembled by screwing a screw portion into the screw hole to form a ball groove on the outer periphery.
- a hollow cylindrical member that guides the fastening screw portion into the fastening screw hole is arranged on a coaxial line with the rotating machine shaft of the casing, and the fastening screw portion is provided along the inner surface of the hollow cylindrical member in the fastening screw hole of the rotating machine shaft. It is described that the shaft can be easily replaced by adopting the structure fastened to.
- Patent Document 1 since the structure is adopted in which the screws at both ends of the rotary machine shaft are fastened and pressed against the bearing via the flange, the shaft can be easily replaced by removing the flange.
- the present invention has been made in view of the above points, and an object of the present invention is not only to prevent damage to the rotor core, but also to replace only the shaft without changing the structure of the rotor. To provide a replacement method.
- the rotor shaft replacement method of the present invention is a rotor shaft replacement method for replacing a shaft inserted in a hole provided in a central portion of a rotor core in order to achieve the above object.
- the shaft While fixing the rotor core, the shaft is provided with a through hole that reaches at least a key groove in which a key arranged between the rotor core and the shaft is installed, and the key is pulled out from the through hole.
- the shaft is deformed so as to be crushed toward the center of the shaft, and then the shaft is pulled out from the rotor core to take out the rotor core, and the taken out rotor core is attached to a new shaft. It is characterized by.
- the rotor core is not damaged, but only the shaft can be replaced without changing the structure of the rotating machine.
- Example 1 of the rotor shaft replacement method of the present invention will be described with reference to FIGS. 1, 2 and 3.
- the shaft 1 inserted in the hole provided in the central portion of the rotor core 2 is pulled out by boring or the like, and then formed on the rotor core 2 so that the rotor core 2 does not come apart.
- the fixture 6 is arranged using the ventilation holes and the like, and the rotor core is fixed.
- the rotor core 2 is fixed by the fixture 6 by attaching plates to both sides of the rotor core 2 in the axial direction and tightening bolts arranged using ventilation holes or the like.
- both ends of the shaft 1 are cut by a machining center at a position close to the rotor core 2, and the rotor core 2 is attached to the shaft 1.
- caulking to fix the position of the end plate 4 Remove the 8th grade processing. After that, the end plate key 7 is removed from the end plate key groove 9 of the end plate 4.
- the shaft 1 and the rotor core 2 are fixed in order to fix the shaft 1.
- the key 5a arranged between 1 and the rotor core 2 is removed from the second through hole 3b drilled in the shaft 1.
- the shaft 1 is deformed so as to be crushed (tightened and crushed by a clamp or the like) toward the center of the shaft 1 and rotated with the shaft 1.
- the tightening allowance between the child iron cores 2 is eliminated, and the shaft 1 can be moved.
- the shaft 1 is pulled out from the rotor core 2 and the rotor core 2 is taken out.
- the shaft 1 can be replaced without changing the structure of the rotating machine, it can be applied to a rotor of a rotating machine having a large load transmission.
- the shaft 1 can be replaced at low cost without manufacturing additional parts.
Abstract
The purpose of the present invention is to provide a method for exchanging a shaft of a rotor, the method being capable of exchanging only a shaft without giving any damage to an iron core of a rotor or changing a structure of a rotator. This method for exchanging a shaft of a rotor is for exchanging a shaft inserted into a hole provided in a center part of an iron core of a rotor. The method is characterized by fixing the iron core of the rotor, providing a through hole in the shaft, the through hole reaching a keyway at least disposed between the iron core of the rotor and the shaft, in the keyway a key being disposed, pulling the key out of the through hole, deforming the shaft so that the shaft is flattened along the center of the shaft, thereafter pulling the shaft out of the iron core of the rotor and taking out the iron core of the rotor, and attaching the taken iron core of the rotor to a new shaft.
Description
本発明は、回転子のシャフト交換方法に関する。
The present invention relates to a rotor shaft replacement method.
一般的に、電動機や発電機などの回転機は、回転子と固定子で構成されている。上記回転子は、動力伝達のため回転子のシャフト端部で負荷機のシャフトと直結されている。通常、負荷機と回転子との両シャフト端部の直結には、カップリングが用いられている。
Generally, a rotating machine such as a motor or a generator is composed of a rotor and a stator. The rotor is directly connected to the shaft of the load machine at the end of the rotor shaft for power transmission. Normally, a coupling is used to directly connect the ends of both shafts of the load machine and the rotor.
上記したカップリングは、回転子と負荷機のシャフト端部形状の違いを吸収して、互いのシャフトを直結するための機構であり、シャフトからカップリングへのトルク伝達には、キーによる伝達や焼き嵌め等の締め付けによる伝達、或いはシャフト端をギア状に加工したスプラインシャフトによる伝達などがある。
The above-mentioned coupling is a mechanism for absorbing the difference in the shape of the shaft end between the rotor and the load machine and directly connecting the shafts to each other. Transmission by tightening such as shrink fitting, or transmission by a spline shaft with the shaft end processed into a gear shape.
上記した焼き嵌め等の締め付けによる伝達は、大きなトルクの伝達の際の使用されることが多く、必然的に大きな締め付け力が必要となることから、メンテナンス時などでカップリングの取り外しが必要となった場合には、シャフトからカップリングを取り外す際の締め付け力の緩和が十分にできず、回転子のシャフト直結端に抜き傷が付く恐れがある。
The above-mentioned transmission by tightening such as shrink fitting is often used when transmitting a large torque, and a large tightening force is inevitably required. Therefore, it is necessary to remove the coupling at the time of maintenance or the like. In this case, the tightening force when removing the coupling from the shaft cannot be sufficiently relaxed, and the rotor directly connected to the shaft may be scratched.
また、スプラインシャフトは、締め付けによるトルク伝達を伴わないため、メンテナンス等での直結解体時の作業による傷の発生は、焼き嵌めによるトルク伝達に比べ可能性は低いが、稼働時にスプラインの潤滑が必要なため、潤滑の不良など別の原因でしばしばシャフトの傷が発生する。
In addition, since the spline shaft does not involve torque transmission due to tightening, it is less likely that scratches will occur due to work during direct disassembly for maintenance, etc., compared to torque transmission due to shrink fitting, but spline lubrication is required during operation. Therefore, the shaft is often scratched due to other causes such as poor lubrication.
このシャフトの傷が軽微な傷であれば研磨等による修正加工で対応可能あるが、修正加工が不可能な大きな傷が生じた場合は、回転子は使用不可となってしまう。
If the scratch on this shaft is minor, it can be repaired by polishing etc. However, if a large scratch that cannot be repaired occurs, the rotor cannot be used.
回転機の回転子は、一般に、積層した電磁鋼板等で構成された回転子鉄心の中央部に穴をあけ、この穴にシャフトを配置した構造であり、回転子鉄心で発生したトルクをシャフトに伝達するため、回転子鉄心の中央部の穴とシャフトは、焼き嵌め等により固定されている。
The rotor of a rotor generally has a structure in which a hole is made in the center of a rotor core made of laminated electromagnetic steel plates or the like, and a shaft is placed in this hole, and the torque generated by the rotor core is used as the shaft. For transmission, the hole in the center of the rotor core and the shaft are fixed by shrink fitting or the like.
また、回転子鉄心は、シャフトを芯として構成されるため、特に、電磁鋼板を積層した回転子鉄心では、ボーリング等でシャフトを取り除いたとしても回転子として形状を保つことができず変形する恐れがある。
In addition, since the rotor core is configured with the shaft as the core, the rotor core in which electromagnetic steel sheets are laminated cannot maintain its shape as a rotor even if the shaft is removed by boring or the like, and may be deformed. There is.
そのため、従来は、シャフトのみの交換が行えず、回転子全体の交換を行ってきた。回転子は、製作を行うために多くのコストや時間を要するため、シャフトのみの交換手法の確立が望まれてきた。
Therefore, in the past, it was not possible to replace only the shaft, and the entire rotor was replaced. Since a rotor requires a lot of cost and time to manufacture, it has been desired to establish a shaft-only replacement method.
回転機のシャフト交換に関する先行技術文献としては、特許文献１を挙げることができる。
Patent Document 1 can be mentioned as a prior art document relating to shaft replacement of a rotating machine.
この特許文献１には、回転機シャフトの端部に締結用ねじ孔を形成し、このねじ孔にねじ部を螺合して外周にボール溝を形成したボールねじを組付けたアクチュエータ構造において、締結用ねじ部を締結用ねじ孔内に案内する中空円筒部材をケーシングの回転機シャフトと同軸線上に配置し、中空円筒部材の内面に沿って締結用ねじ部を回転機シャフトの締結用ねじ孔に締結した構造とすることで、シャフトを容易に交換できることが記載されている。
In Patent Document 1, a screw hole for fastening is formed at an end of a rotary machine shaft, and a ball screw is assembled by screwing a screw portion into the screw hole to form a ball groove on the outer periphery. A hollow cylindrical member that guides the fastening screw portion into the fastening screw hole is arranged on a coaxial line with the rotating machine shaft of the casing, and the fastening screw portion is provided along the inner surface of the hollow cylindrical member in the fastening screw hole of the rotating machine shaft. It is described that the shaft can be easily replaced by adopting the structure fastened to.
上述した特許文献１では、回転機シャフトの両端のねじを締結させ、フランジを介して軸受けに押し付ける構造を採っているため、そのフランジを外すことでシャフトの交換を容易に行うことができる。
In Patent Document 1 described above, since the structure is adopted in which the screws at both ends of the rotary machine shaft are fastened and pressed against the bearing via the flange, the shaft can be easily replaced by removing the flange.
しかしながら、上述した特許文献１でのシャフトの交換構造の場合、シャフトをフランジと共に機械的に引き抜くため、回転子鉄心の内周側やシャフトの周辺部品に傷をつける可能性が高く、また、大型の回転機の場合は、シャフトと回転子部品は強く固定されているため、機械的に抜くことが難しく、シャフトのみの交換を行うという課題の解決には至らなかった。
However, in the case of the shaft replacement structure in Patent Document 1 described above, since the shaft is mechanically pulled out together with the flange, there is a high possibility that the inner peripheral side of the rotor core and the peripheral parts of the shaft are damaged, and the size is large. In the case of the rotary machine, since the shaft and the rotor parts are strongly fixed, it is difficult to pull them out mechanically, and the problem of replacing only the shaft has not been solved.
本発明は上述の点に鑑みなされたもので、その目的とするところは、回転子鉄心を傷付けることがないことは勿論、回転機の構造を変えることなくシャフトのみの交換が行える回転子のシャフト交換方法を提供することにある。
The present invention has been made in view of the above points, and an object of the present invention is not only to prevent damage to the rotor core, but also to replace only the shaft without changing the structure of the rotor. To provide a replacement method.
本発明の回転子のシャフト交換方法は、上記目的を達成するために、回転子鉄心の中央部に設けられた穴に挿入されているシャフトを交換する回転子のシャフト交換方法であって、前記回転子鉄心を固定すると共に、前記シャフトに、少なくとも前記回転子鉄心と前記シャフトの間に配置されているキーが設置されているキー溝に達する貫通孔を設け、前記貫通孔から前記キーを抜き取り、前記シャフトを、該シャフトの中心に向けて押しつぶすように変形させ、その後、前記シャフトを前記回転子鉄心から引き抜いて前記回転子鉄心を取り出し、取り出した前記回転子鉄心を新たなシャフトに取り付けることを特徴とする。
The rotor shaft replacement method of the present invention is a rotor shaft replacement method for replacing a shaft inserted in a hole provided in a central portion of a rotor core in order to achieve the above object. While fixing the rotor core, the shaft is provided with a through hole that reaches at least a key groove in which a key arranged between the rotor core and the shaft is installed, and the key is pulled out from the through hole. The shaft is deformed so as to be crushed toward the center of the shaft, and then the shaft is pulled out from the rotor core to take out the rotor core, and the taken out rotor core is attached to a new shaft. It is characterized by.
本発明によれば、回転子鉄心を傷付けることがないことは勿論、回転機の構造を変えることなくシャフトのみの交換が行える。
According to the present invention, not only the rotor core is not damaged, but only the shaft can be replaced without changing the structure of the rotating machine.
以下、図示した実施例に基づいて本発明の回転子のシャフト交換方法を説明する。なお、各図において、同一構成部品には同符号を使用する。
Hereinafter, a method for exchanging the shaft of the rotor of the present invention will be described based on the illustrated examples. In each figure, the same reference numerals are used for the same components.
図１、図２及び図３を用いて本発明の回転子のシャフト交換方法の実施例１を説明する。
Example 1 of the rotor shaft replacement method of the present invention will be described with reference to FIGS. 1, 2 and 3.
本発明は、まず、回転子鉄心２の中央部に設けられた穴に挿入されているシャフト１をボーリング等で抜いた後に、回転子鉄心２がばらけないように回転子鉄心２に形成されている通風孔等を利用して固定具６を配置し、回転子鉄心を固定する。
In the present invention, first, the shaft 1 inserted in the hole provided in the central portion of the rotor core 2 is pulled out by boring or the like, and then formed on the rotor core 2 so that the rotor core 2 does not come apart. The fixture 6 is arranged using the ventilation holes and the like, and the rotor core is fixed.
なお、固定具６による回転子鉄心２の固定は、回転子鉄心２の軸方向両面にプレートを取り付け、通風孔等を利用して配置されたボルトを締め付けることで行われる。
The rotor core 2 is fixed by the fixture 6 by attaching plates to both sides of the rotor core 2 in the axial direction and tightening bolts arranged using ventilation holes or the like.
次に、シャフト１を抜きやすくするため（シャフト１は短い方が抜きやすい）に、シャフト１の両端を回転子鉄心２に近い位置でマシニングセンタにより切断し、シャフト１に回転子鉄心２を取り付けるために回転子鉄心２の軸方向両端に設置しているエンドプレート４に設置しているエンドプレートキー７を回転子鉄心２の端のエンドプレート４から取り除くため、エンドプレート４の位置を固定するカシメ８等の加工を除去する。その後、エンドプレートキー７をエンドプレート４のエンドプレートキー用溝９から取り外す。
Next, in order to make it easier to pull out the shaft 1 (the shorter the shaft 1 is, the easier it is to pull out), both ends of the shaft 1 are cut by a machining center at a position close to the rotor core 2, and the rotor core 2 is attached to the shaft 1. In order to remove the end plate keys 7 installed on the end plates 4 installed at both ends of the rotor core 2 in the axial direction from the end plates 4 at the ends of the rotor core 2, caulking to fix the position of the end plate 4 Remove the 8th grade processing. After that, the end plate key 7 is removed from the end plate key groove 9 of the end plate 4.
次に、シャフト１に３つの貫通孔をあける（図１の状態で、ドリル等であける）。即ち、シャフト１には、シャフト１と中心を同じにする第１の貫通孔３ａと、回転子鉄心２とシャフト１の間に配置されているキー５ａが設置されているキー溝５ｂに達する第２の貫通孔３ｂ（シャフト１及び回転子鉄心２を固定させるために、シャフト１及び回転子鉄心２の間に設置されているキー５ａを取り除くために、キー５ａが配置されているキー溝５ｂに達するような貫通孔）と、第１の貫通孔３ａを挟んで第２の貫通孔３ｂとは反対側の位置（シャフト１の中心に対して点対称な位置）に設けられた第３の貫通孔３ｃの３つの貫通孔とをあける。
Next, make three through holes in the shaft 1 (drill or the like in the state shown in FIG. 1). That is, the shaft 1 reaches the key groove 5b in which the first through hole 3a having the same center as the shaft 1 and the key 5a arranged between the rotor core 2 and the shaft 1 are installed. Through hole 3b of 2 (key groove 5b in which the key 5a is arranged to remove the key 5a installed between the shaft 1 and the rotor core 2 in order to fix the shaft 1 and the rotor core 2). A third through hole (a position symmetrical with respect to the center of the shaft 1) opposite to the second through hole 3b with the first through hole 3a in between. Make three through holes of the through hole 3c.
シャフト１に第１の貫通孔３ａ、第２の貫通孔３ｂ及び第２の貫通孔３ｂの３つの貫通孔をドリル等であけた後、シャフト１及び回転子鉄心２を固定させるために、シャフト１及び回転子鉄心２の間に配置されているキー５ａを、シャフト１にあけた第２の貫通孔３ｂから取り除く。キー５ａを第２の貫通孔３ｂから取り出した後、シャフト１を引き抜くために、シャフト１をシャフト１の中心に向かって押しつぶす（クランプ等によって締めあげて押しつぶす）ように変形させ、シャフト１と回転子鉄心２間の締め代をなくし、シャフト１を移動可能にする。シャフト１を変形させた後、シャフト１を回転子鉄心２から引き抜き、回転子鉄心２を取り出す。
After drilling three through holes 3a, a second through hole 3b, and a second through hole 3b in the shaft 1 with a drill or the like, the shaft 1 and the rotor core 2 are fixed in order to fix the shaft 1. The key 5a arranged between 1 and the rotor core 2 is removed from the second through hole 3b drilled in the shaft 1. After the key 5a is taken out from the second through hole 3b, in order to pull out the shaft 1, the shaft 1 is deformed so as to be crushed (tightened and crushed by a clamp or the like) toward the center of the shaft 1 and rotated with the shaft 1. The tightening allowance between the child iron cores 2 is eliminated, and the shaft 1 can be moved. After deforming the shaft 1, the shaft 1 is pulled out from the rotor core 2 and the rotor core 2 is taken out.
回転子鉄心２のみを取り出した後、回転子鉄心２を焼嵌等により新規なシャフトに取り付ける。回転子鉄心２を新規なシャフトに散り付けた後、回転子鉄心２とシャフト１の固定を実施するため、回転子鉄心２の軸方向両端に配置されているエンドプレート４のエンドプレートキー用溝９からエンドプレートキー７を挿入する。挿入したエンドプレートキー７を固定させるため、シャフト１の交換前の位置（図３のカシメ８の位置）とは異なる位置（図３のカシメ１０の位置）で固定を行い（同じ位置で固定すると、１度目の固定による摩耗等で固定が緩くなる可能性があるため、異なる位置で固定する）、回転子鉄心２とシャフト１を固定する。
After taking out only the rotor core 2, attach the rotor core 2 to a new shaft by shrink fitting or the like. After the rotor core 2 is scattered on a new shaft, the end plate key grooves of the end plate 4 arranged at both ends of the rotor core 2 in the axial direction are used to fix the rotor core 2 and the shaft 1. Insert the end plate key 7 from 9. In order to fix the inserted end plate key 7, the shaft 1 is fixed at a position (position of caulking 10 in FIG. 3) different from the position before replacement (position of caulking 8 in FIG. 3) (when fixed at the same position). Fix the rotor core 2 and the shaft 1 at different positions because the fixing may become loose due to wear due to the first fixing).
なお、エンドプレートキー７の固定の際は、カシメ等の方法を実施し回転子鉄心に印を付けておくことが好ましい。
When fixing the end plate key 7, it is preferable to carry out a method such as caulking to mark the rotor core.
このような本実施例によると、回転機の構造を変えることなくシャフト１の交換が行えるため、負荷伝達が大きい回転機の回転子にも適応可能である。また、追加部品の製作がなくなり低コストでシャフト１を交換できる。
According to this embodiment, since the shaft 1 can be replaced without changing the structure of the rotating machine, it can be applied to a rotor of a rotating machine having a large load transmission. In addition, the shaft 1 can be replaced at low cost without manufacturing additional parts.
従って、本実施例によれば、回転子鉄心２を傷付けることがないことは勿論、回転機の構造を変えることなくシャフト１のみの交換が行える。
Therefore, according to this embodiment, not only the rotor core 2 is not damaged, but only the shaft 1 can be replaced without changing the structure of the rotating machine.
なお、上記した実施例は本発明を分かり易く説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。
It should be noted that the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration.
１…シャフト、２…回転子鉄心、３ａ…第１の貫通孔、３ｂ…第２の貫通孔、３ｃ…第３の貫通孔、４…エンドプレート、５ａ…キー、５ｂ…キー溝、６…固定具、７…エンドプレートキー、８…加工前のカシメ、９…エンドプレートキー用溝、１０…加工後のカシメ。
1 ... shaft, 2 ... rotor core, 3a ... first through hole, 3b ... second through hole, 3c ... third through hole, 4 ... end plate, 5a ... key, 5b ... key groove, 6 ... Fixture, 7 ... End plate key, 8 ... Caulking before processing, 9 ... End plate key groove, 10 ... Caulking after processing.
Claims (8)
- 回転子鉄心の中央部に設けられた穴に挿入されているシャフトを交換する回転子のシャフト交換方法であって、
前記回転子鉄心を固定すると共に、前記シャフトに、少なくとも前記回転子鉄心と前記シャフトの間に配置されているキーが設置されているキー溝に達する貫通孔を設け、前記貫通孔から前記キーを抜き取り、前記シャフトを、該シャフトの中心に向けて押しつぶすように変形させ、その後、前記シャフトを前記回転子鉄心から引き抜いて前記回転子鉄心を取り出し、取り出した前記回転子鉄心を新たなシャフトに取り付けることを特徴とする回転子のシャフト交換方法。 This is a rotor shaft replacement method for replacing the shaft inserted in the hole provided in the center of the rotor core.
The rotor core is fixed, and the shaft is provided with a through hole that reaches at least a key groove in which a key arranged between the rotor core and the shaft is installed, and the key is inserted from the through hole. The shaft is pulled out and deformed so as to be crushed toward the center of the shaft, and then the shaft is pulled out from the rotor core to take out the rotor core, and the taken out rotor core is attached to a new shaft. A method of replacing the rotor shaft, which is characterized by the fact that. - 請求項１に記載の回転子のシャフト交換方法であって、
前記シャフトを前記回転子鉄心から抜いた後に、前記回転子鉄心に形成されている通風孔に固定具を配置して前記回転子鉄心を固定することを特徴とする回転子のシャフト交換方法。 The method for replacing a rotor shaft according to claim 1.
A method for exchanging a rotor shaft, which comprises removing the shaft from the rotor core and then arranging a fixture in a ventilation hole formed in the rotor core to fix the rotor core. - 請求項１又は２に記載の回転子のシャフト交換方法であって、
前記シャフトには、前記シャフトと中心を同じにする第１の貫通孔と、前記回転子鉄心と前記シャフトの間に設けられているキーが設置されているキー溝に達する第２の貫通孔と、前記第１の貫通孔を挟んで前記第２の貫通孔とは反対側の位置に設けられた第３の貫通孔の３つの貫通孔が形成されており、
前記第２の貫通孔から前記キーを抜き取り、前記シャフトを、該シャフトの中心に向けて押しつぶすように変形させて、前記シャフトを前記回転子鉄心から引き抜いて前記回転子鉄心を取り出すことを特徴とする回転子のシャフト交換方法。 The rotor shaft replacement method according to claim 1 or 2.
The shaft has a first through hole that has the same center as the shaft, and a second through hole that reaches a key groove in which a key provided between the rotor core and the shaft is installed. , Three through-holes of a third through-hole provided at a position opposite to the second through-hole with the first through-hole in between are formed.
The key is pulled out from the second through hole, the shaft is deformed so as to be crushed toward the center of the shaft, and the shaft is pulled out from the rotor core to take out the rotor core. How to replace the rotor shaft. - 請求項３に記載の回転子のシャフト交換方法であって、
３つの前記貫通孔を加工する前に、前記シャフトの端部を切断することを特徴とする回転子のシャフト交換方法。 The method for replacing a rotor shaft according to claim 3.
A method for exchanging a rotor shaft, which comprises cutting an end portion of the shaft before processing the three through holes. - 請求項１乃至４のいずれか１項に記載の回転子のシャフト交換方法であって、
前記シャフトは、該シャフトの交換後、前記回転子鉄心と前記シャフトがカシメにより固定されており、前記カシメは、前記シャフトの交換前になされたカシメの位置とは異なる位置で行われていることを特徴とする回転子のシャフト交換方法。 The method for replacing a rotor shaft according to any one of claims 1 to 4.
In the shaft, the rotor core and the shaft are fixed by caulking after the shaft is replaced, and the caulking is performed at a position different from the crimping position performed before the shaft is replaced. Rotor shaft replacement method characterized by. - 請求項５に記載の回転子のシャフト交換方法であって、
前記シャフトの交換前になされたカシメの位置又は前記シャフトの交換後になされたカシメの位置は、前記シャフトの取り外し前に前記回転子鉄心に印が付けられていることを特徴とする回転子のシャフト交換方法。 The rotor shaft replacement method according to claim 5.
The position of the caulking performed before the replacement of the shaft or the position of the caulking performed after the replacement of the shaft is a rotor shaft characterized in that the rotor core is marked before the shaft is removed. method of exchange. - 回転子鉄心の中央部に設けられた穴に挿入されているシャフトを交換する回転子のシャフト交換方法であって、
前記シャフトを前記回転子鉄心から抜いた後に、前記回転子鉄心に形成されている通風孔に固定具を配置して前記回転子鉄心を固定し、
次に、前記シャフトの両端を回転子鉄心に近い位置で切断し、前記回転子鉄心の軸方向両端に配置されているエンドプレートに設置しているエンドプレートキーを前記回転子鉄心の端の前記エンドプレートから取り除くため、前記エンドプレートの位置を固定するカシメの加工を除去し、その後、前記エンドプレートキーを前記エンドプレートのエンドプレートキー用溝から取り外し、
次に、前記シャフトに、前記シャフトと中心を同じにする第１の貫通孔と、前記回転子鉄心と前記シャフトの間に配置されているキーが設置されているキー溝に達する第２の貫通孔と、前記第１の貫通孔を挟んで前記第２の貫通孔とは反対側の位置に設けられた第３の貫通孔の３つの貫通孔を形成し、前記シャフトに３つの貫通孔を形成した後、前記キーを前記第２の貫通孔より取り出し、前記キーを取り出した後、前記シャフトを、前記シャフトの中心に向かって押しつぶすように変形させ、前記シャフトと前記回転子鉄心間の締め代をなくして前記シャフトを移動可能とし、前記シャフトを前記回転子鉄心から引き抜いて前記回転子鉄心を取り出し、その後、前記回転子鉄心を新たなシャフトに取り付けることを特徴とする回転子のシャフト交換方法。 This is a rotor shaft replacement method for replacing the shaft inserted in the hole provided in the center of the rotor core.
After the shaft is pulled out from the rotor core, a fixture is placed in a ventilation hole formed in the rotor core to fix the rotor core.
Next, both ends of the shaft are cut at positions close to the rotor core, and the end plate keys installed on the end plates arranged at both ends in the axial direction of the rotor core are attached to the end plate keys at the ends of the rotor core. To remove from the end plate, the caulking process to fix the position of the end plate is removed, and then the end plate key is removed from the end plate key groove of the end plate.
Next, the shaft reaches a first through hole that has the same center as the shaft and a second through that reaches a key groove in which a key arranged between the rotor core and the shaft is installed. Three through holes are formed between the hole and a third through hole provided at a position opposite to the second through hole with the first through hole interposed therebetween, and three through holes are formed on the shaft. After the formation, the key is taken out from the second through hole, and after the key is taken out, the shaft is deformed so as to be crushed toward the center of the shaft, and the shaft and the rotor core are tightened. Rotor shaft replacement, characterized in that the shaft can be moved without a margin, the shaft is pulled out from the rotor core, the rotor core is taken out, and then the rotor core is attached to a new shaft. Method. - 請求項７に記載の回転子のシャフト交換方法であって、
前記回転子鉄心を新たなシャフトに取り付けた後、前記回転子鉄心と前記シャフトの固定を実施するため、前記回転子鉄心の軸方向両端に配置されているエンドプレートのエンドプレートキー用溝からエンドプレートキーを挿入し、挿入した前記エンドプレートキーを固定させるため、前記シャフトの交換前の位置とは異なる位置で固定を行って前記回転子鉄心と前記シャフトを固定することを特徴とする回転子のシャフト交換方法。 The rotor shaft replacement method according to claim 7.
After the rotor core is attached to a new shaft, the end plate key grooves of the end plates arranged at both ends in the axial direction of the rotor core are used to fix the rotor core and the shaft. In order to insert the plate key and fix the inserted end plate key, the rotor is fixed at a position different from the position before replacement of the shaft to fix the rotor core and the shaft. How to replace the shaft.
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| AU2020444184A AU2020444184B2 (en) | 2020-04-24 | 2020-11-06 | Method for exchanging shaft of rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020077174A JP7369661B2 (en) | 2020-04-24 | 2020-04-24 | How to replace rotor shaft |
| JP2020-077174 | 2020-04-24 |
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| WO2021215035A1 true WO2021215035A1 (en) | 2021-10-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018179271A (en) * | 2017-04-21 | 2018-11-15 | Ｋｙｂ株式会社 | Rack shaft and method for manufacturing rack shaft |
| WO2019043767A1 (en) * | 2017-08-29 | 2019-03-07 | 三菱電機株式会社 | Motor and air conditioning device |
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2020
- 2020-04-24 JP JP2020077174A patent/JP7369661B2/en active Active
- 2020-11-06 AU AU2020444184A patent/AU2020444184B2/en active Active
- 2020-11-06 WO PCT/JP2020/041554 patent/WO2021215035A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018179271A (en) * | 2017-04-21 | 2018-11-15 | Ｋｙｂ株式会社 | Rack shaft and method for manufacturing rack shaft |
| WO2019043767A1 (en) * | 2017-08-29 | 2019-03-07 | 三菱電機株式会社 | Motor and air conditioning device |
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| Publication number | Publication date |
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| JP7369661B2 (en) | 2023-10-26 |
| AU2020444184A1 (en) | 2023-01-05 |
| AU2020444184B2 (en) | 2023-09-28 |
| JP2021175261A (en) | 2021-11-01 |
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