WO2014024505A1 - 回転機械のロータ接続用治具、及びロータ接続方法 - Google Patents
回転機械のロータ接続用治具、及びロータ接続方法 Download PDFInfo
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- WO2014024505A1 WO2014024505A1 PCT/JP2013/054035 JP2013054035W WO2014024505A1 WO 2014024505 A1 WO2014024505 A1 WO 2014024505A1 JP 2013054035 W JP2013054035 W JP 2013054035W WO 2014024505 A1 WO2014024505 A1 WO 2014024505A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
- F16D1/033—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/026—Shaft to shaft connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
Definitions
- the present invention relates to a rotor connecting jig used when connecting divided rotors in a rotary machine.
- a rotor connecting jig used when connecting divided rotors in a rotary machine.
- the rotors of rotary machines such as gas turbines and steam turbines are axially divided, for example, on the turbine side and the generator side, and are connected and configured.
- An example of such a rotor connection is disclosed, for example, in US Pat.
- JP 2012-77702 A Japanese Utility Model Publication No. 61-108521
- An object of the present invention is to provide a rotor connecting jig and a rotor connecting method of a rotary machine which can be easily axially aligned.
- a jig for connecting a rotor of a rotary machine according to a first aspect of the present invention includes a first flange portion provided at an end portion of a first rotor, and a second flange portion provided at an end portion of a second rotor.
- the bolts are inserted through the first bolt hole formed in the first flange portion and the second bolt hole formed in the second flange portion to connect the first rotor and the second rotor.
- a shaft member having a fitting columnar portion disposed in the first bolt hole and fitted in the first bolt hole, and a second member of the second bolt And a sleeve having a fitting cylindrical portion disposed in the hole and fitted to the second bolt hole.
- the shaft member further includes a tapered portion which is formed at an end portion of the fitting columnar portion and gradually reduces the diameter from the first bolt hole toward the second bolt hole, and the fitting cylindrical shape of the sleeve
- the part is formed with a tapered hole which is gradually expanded in diameter from the second bolt hole toward the first bolt hole around the axis of the sleeve and can be fitted to the tapered portion.
- the shaft member is formed at the end portion of the tapered portion from a tool hole formed in the direction of the shaft from the end portion on the first bolt hole side, with the axis of the shaft member as a center, and And an externally threaded portion extending from the first bolt hole toward the second bolt hole.
- the sleeve can be fastened to the shaft member by such a tool hole and an external thread. It is possible to easily and reliably fit the tapered portion of the shaft member and the tapered hole of the sleeve, and axial center alignment of the first flange portion and the second flange portion is possible. Also, the shaft member and the sleeve can be easily removed.
- the dimension in the direction of the axis of the fitting cylindrical portion may be equal to or less than the width dimension of the second flange portion in the direction in which the bolt is inserted.
- the fitting cylindrical portion when the fitting cylindrical portion is fitted in the second bolt hole, the fitting cylindrical portion does not protrude from the second flange portion toward the first flange portion, so that the first The axial alignment of the flange portion with the second flange portion is easier.
- the shaft member may have a first screw hole for attaching a pull-out tool formed in a direction of the axis of the shaft member from an end on the first bolt hole side.
- the shaft member By screwing a drawing tool such as an eyebolt into such a first screw hole, the shaft member can be easily pulled out from the first bolt hole and the second bolt hole.
- the sleeve may have a second screw hole for attaching a pull-out tool which is formed by being recessed in the direction of the axis of the sleeve from the end on the second bolt hole side.
- the sleeve By screwing a drawing tool such as an eyebolt into such a second screw hole, the sleeve can be easily pulled out of the second bolt hole.
- a first flange portion provided at an end portion of the first rotor and a second flange portion provided at an end portion of the second rotor are butted,
- a rotor for connecting the first rotor and the second rotor by inserting bolts into a plurality of first bolt holes formed in one flange portion and a plurality of second bolt holes formed in the second flange portion
- a connecting method comprising: a shaft member having a fitting columnar portion disposed in the first bolt hole and fitted to the first bolt hole; and the second bolt disposed in the second bolt hole
- any of the jig installation step of fitting the combined cylindrical portion and further fitting the taper portion and the taper hole, and fitting the shaft member and the sleeve in the jig placement step The shaft member installed in the jig installation step after the bolt installation step of inserting and installing the bolt in the first bolt hole and the second bolt hole, and the jig installation step and the bolt installation step And take the sleeve And a bolt final installation step in which the bolt is inserted and installed in the first bolt hole and the second bolt hole from which the shaft member and the sleeve are removed in the jig removal step.
- axial alignment of the first flange portion and the second flange portion becomes possible by fitting the tapered portion of the rotor connecting jig and the tapered hole in the jig installation step.
- the bolts can be finally installed in all the first bolt holes and the second bolt holes while the axes are aligned, and the first rotor and the second rotor can be easily connected.
- axial alignment can be easily performed by the shaft member having the tapered portion and the sleeve having the tapered hole.
- FIG. 2 is a cross-sectional view of a rotor to which a joining jig according to an embodiment of the present invention is applied, showing an AA cross section of FIG. 1;
- FIG. 2 is a cross-sectional view of a rotor to which a joining jig according to an embodiment of the present invention is applied, and shows a cross-section taken along line BB in FIG. It is a figure showing the state where the jig for connection concerning the embodiment of the present invention was installed.
- the connecting jig (rotor connecting jig for rotary machine) 1 according to the embodiment of the present invention will be described below. First, the rotor 100 to which the connecting jig 1 is applied will be described.
- the rotor 100 is a member that is used, for example, in a rotating machine such as a gas turbine or a steam turbine, and transmits a rotational force. As shown in FIGS. 1 and 2A and 2B, the rotor 100 is configured of a first rotor 110 and a second rotor 120 connected to one end of the first rotor 110. The axes of the first rotor 110 and the second rotor 120 coincide with each other and form an axis O of the rotor 100. The rotor 100 including the first rotor 110 and the second rotor 120 is rotatable about an axis O.
- the first rotor 110 is directed to the first direction side D1 of the axis O (with respect to the surface of FIG. 1 in the present embodiment) with respect to the connection portion C (see FIG. 7C) of the first rotor 110 and the second rotor 120.
- the first rotor 110 is provided at the end of the first main body 111 having a cylindrical shape and at the second direction D2 of the first main body 111, and has a disk shape having an outer diameter larger than that of the first main body 111. And a first flange portion 112. A plurality of the first flange portions 112 are circumferentially spaced at a position radially outward of the outer diameter of the first main body portion 111, and the first flange portions 112 are arranged in the direction along the axis O It has a first bolt hole 113 formed through it.
- the second rotor 120 is provided at the end portion of the second main body portion 121 having a cylindrical shape and the first direction side D1 of the second main body portion 121, and the outer diameter is larger than the second main body portion 121.
- a second flange portion 122 having a large disk shape.
- a plurality of second flanges 122 are circumferentially spaced at a position radially outward of the outer diameter of the second main body 121, and the second flanges 122 are arranged in the direction along the axis O. It has a second bolt hole 123 formed through it.
- the first flange portion 112 and the second flange portion 122 have the same diameter. And, when the first rotor 110 and the second rotor 120 are butted on the concentric axis, they are arranged such that the first bolt hole 113 and the second bolt hole 123 are arranged at exactly the same circumferential position. A first bolt hole 113 and a second bolt hole 123 are formed. Further, the first bolt holes 113 and the second bolt holes 123 have the same inner diameter dimension.
- the connecting jig 1 As shown in FIG. 3, the connecting jig 1 is fitted to the shaft member 10 fitted to the first bolt hole 113 and disposed from the first bolt hole 113 to the second bolt hole 123, and to the second bolt hole 123.
- the shaft member 10 is fitted with a sleeve 20 fitted from the outer peripheral side.
- the shaft member 10 has a pin shape centering on the axis P1, and the head 11 provided at the end of the first direction side D1 and the second of the head 11 It has the stopper part 14 provided in the direction side D2, and the fitting columnar part 13 provided in the 2nd direction side D2 of the stopper part 14.
- the shaft member 10 has a tapered portion 16 formed on the end of the fitting columnar portion 13 on the second direction side D2 via the chamfered portion 15a, and an end of the second direction side D2 of the tapered portion 16 And an externally threaded portion 17 formed through the chamfered portion 15b.
- the head portion 11 has a cylindrical shape, and further has a hexagonal hole (tool hole) 12 formed to be recessed from the first direction side D1 to the second direction side D2 about the axis P1.
- a first screw hole 19 is formed at the center of the inside of the hexagonal hole 12 so as to be further recessed from the first direction side D1 to the second direction side D2 with the axis P1 as the center.
- a screw (not shown) can be screwed.
- the stopper portion 14 has a disk shape formed to have a diameter larger than the inner diameter of the first bolt hole 113, and in a state where the shaft member 10 is installed on the first flange portion 112, the second stopper portion 14 The end surface facing the direction side D2 of the second contact portion contacts the first flange portion 112. Thus, the entire shaft member 10 can be locked to the first flange portion 112.
- the fitting columnar portion 13 has a cylindrical shape having an outer diameter equal to the inner diameter of the first bolt hole 113, and can be fitted in the first bolt hole 113. Moreover, the chamfer 15a is provided in the edge part of 2nd direction side D2. Then, a relationship of L 1 LL 3 is established between the total dimension L 3 in the direction of the axis P 1 of the fitting columnar portion 13 and the chamfered portion 15 a and the width dimension L 1 in the direction of the axis O of the first flange portion 112. doing. In the state in which the shaft member 10 is installed in the first flange portion 112, all of the fitting columnar portion 13 and the chamfered portion 15 a are disposed inside the first bolt hole 113. In this state, the shaft member 10 can not move in the radial direction of the first bolt hole 113.
- the tapered portion 16 is formed through the chamfered portion 15a from the first direction side D1 toward the second direction side D2 and has a truncated cone shape in which the outer diameter dimension gradually decreases from the fitting columnar portion 13 . Then, in a state where the stopper portion 14 is in contact with the first flange portion 112, at least a part of the tapered portion 16 is provided in the second bolt hole 123.
- the male screw portion 17 is positioned at an end of the second direction side D 2 and has a cylindrical shape formed to have a smaller diameter than the tapered portion 16.
- the cylindrical outer peripheral surface has a male screw. Furthermore, in a state where the stopper portion 14 is in contact with the first flange portion 112, at least a part of the male screw portion 17 is provided so as to project from the second flange portion 122 to the second direction side D2.
- L 1 + L 2 > L 3 + L 4 is established between the total dimension L 4 in the direction of the axis P 1 of the male screw portion 17 and the chamfered portion 15 b.
- the sleeve 20 has a cylindrical shape centering on the axis P2, and has a fitting cylindrical portion 21 fitted in the second bolt hole 123, and the second of the fitting cylindrical portion 21. And a sleeve stopper portion 22 provided on the second direction side D2.
- the sleeve 20 is formed with a tapered hole 23 penetrating the fitting cylindrical portion 21 and the sleeve stopper portion 22 in the direction of the axis P2.
- the fitting cylindrical portion 21 has a cylindrical shape and is located on the first direction side D1, and further has the same outer diameter as the inner diameter of the second bolt hole 123, so that the fitting is performed in the second bolt hole 123 It is possible. Further, a relationship of L 2 LL 5 is established between the dimension L 5 in the axis P 2 direction of the fitting cylindrical portion 21 and the width dimension L 2 in the axis O direction of the second flange portion 122. In the state where the sleeve 20 is installed in the second flange portion 122, all the fitting cylindrical portions 21 are disposed inside the second bolt holes 123. In this state, the sleeve 20 can not move in the radial direction of the second bolt hole 123.
- the sleeve stopper portion 22 is located on the second direction side D2 and has a cylindrical shape formed to have a diameter larger than the inner diameter of the second bolt hole 123, and in a state where the sleeve 20 is installed on the second flange portion 122. An end face of the sleeve stopper portion 22 facing the first direction side D1 contacts the second flange portion 122. Thus, the entire sleeve 20 can be locked to the second flange portion 122.
- the tapered hole 23 is formed by penetrating the fitting cylindrical portion 21 and the sleeve stopper portion 22 in the direction of the axis P2 so that the diameter gradually increases from the second direction side D2 toward the first direction side D1. It is formed.
- the stopper portion 14 of the shaft member 10 is in contact with the first flange portion 112, and the sleeve stopper portion 22 is in contact with the second flange portion 122. It is just possible to fit.
- a plurality of circumferentially spaced intervals are provided, and a second screw hole 24 is formed so as to be recessed from the second direction side D2 to the first direction side D1. A screw can be screwed into the second screw hole 24.
- the connection method of the rotor 100 includes a connection preparation step S1 of arranging the first rotor 110 and the second rotor 120 so as to face each other and preparing the connection jig 1; And a jig installation step S2 in which the connection jig 1 is installed.
- a bolt installation step S3 of installing bolts 30 (see FIG. 7C) in the first bolt holes 113 and the second bolt holes other than the place where the connection jig 1 is installed in the jig installation process S2 is provided.
- the jig removal step S4 for removing the connection jig 1 and the first bolt holes 113 and the second bolt holes from which the connection jig 1 has been removed And bolt final installation process S5.
- connection preparation step S1 is performed.
- the first rotor 110 and the second rotor 120 are suspended by an overhead crane or the like. Then, the first rotor 110 and the second rotor 120 are butted in a suspended state, and the first bolt holes 113 and the corresponding second bolt holes 123 are arranged to face each other. At this point in time, the axis P1 of the first bolt hole 113 and the axis P2 of the second bolt hole 123 facing the first bolt hole 113 are off-axis.
- jig installation process S2 is performed.
- the shaft member 10 is fitted from the first direction side D1 to a predetermined number (for example, four) of the first bolt holes 113 to make the stopper portion 14 a first flange portion 112.
- the sleeve 20 is fitted from the second direction side D2 in the second bolt hole 123 corresponding to the first bolt hole 113 in which the shaft member 10 is disposed, and the sleeve stopper portion 22 is in contact with the second flange portion 122
- an axial displacement of an amount d 1 occurs in the radial direction of the axis O between the first flange portion 112 and the second flange portion 122.
- an axis deviation of an amount d 1 occurs between the axis P1 and the axis P2.
- the nut 31a is screwed to the male screw 17 and fastened in a state in which the male screw 17 of the shaft member 10 protrudes from the sleeve 20 in the second direction. Then, the tapered portion 16 of the shaft member 10 and the tapered hole 23 of the sleeve 20 are fitted, and the first flange portion 112 and the second flange portion 122 are sandwiched.
- bolt installation process S3 is performed. As shown in FIG. 7C, for a predetermined number (for example, four) of the first bolt holes 113 and the second bolt holes 123 except for the positions where the shaft member 10 and the sleeve 20 are provided in the jig installation step S2, 30 are inserted from the first bolt hole 113 to the second bolt hole 123. Then, the first flange portion 112 and the second flange portion 122 are sandwiched and connected by screwing and fastening the nut 31 b to the bolt 30.
- a predetermined number for example, four
- the bolts 30 are installed in the bolt installation step S3 only in the first bolt holes 113 whose axes are aligned in the jig installation step S2 and the second bolt holes 123 corresponding thereto. If the axial centers of all the first bolt holes 113 and the second bolt holes 123 do not coincide with each other, the jig installation step S2 is executed again to add the connection jig 1. The jig installation process S2 and the bolt installation process S3 are repeated in parallel, and finally, the bolts 30 or the connection jig 1 are installed in all the first bolt holes 113 and the second bolt holes 123.
- the bolt 30 is a reamer bolt, not only the reamer bolt but also a normal bolt may be used.
- a jig removal step S4 is performed.
- the bolt installation step S3 with the nut 31b fastened to the bolt 30, the nut 31a is removed from the shaft member 10, and the connection jig 1 is removed.
- the bolt final installation step S5 is performed.
- the bolt 30 is inserted through the first bolt hole 113 and the second bolt hole 123 after removing the connecting jig 1 in the jig removing step S4 and installed, and the first flange portion 112 and the second flange 112 are removed by the nut 31b.
- the flange portion 122 is sandwiched to connect them.
- a connecting fixture 1 has established a connection jig 1 by a jig setting step S2, when the just engaged the tapered portion 16 and the tapered hole 23, the amount of the misalignment d 1 and d 2 becomes 0, and the axis P1 of the shaft member 10 and the axis P2 of the sleeve 20 are located on the same axis. As a result, the axes of the first bolt hole 113 and the second bolt hole 123 coincide with each other.
- the hexagonal wrench can be inserted into the hexagonal hole 12 so that the nut 31a can be fastened to the male screw portion 17. Therefore, the shaft member 10 and the sleeve 20 can be securely tightened, and the tapered portion 16 of the shaft member 10 and the tapered hole 23 of the sleeve 20 can be easily and reliably fitted.
- connection jig 1 of the present embodiment the first rotor 110 and the second rotor 120 can be easily connected by using the connection jig 1. Then, since the rotor 100 is not used in a state in which the connection jig 1 remains on the rotor 100, a large strength is not required, and repeated use is possible, so a great cost advantage can be expected.
- the hexagonal member 12 and the male screw 17 may not necessarily be provided in the shaft member 10, and the taper member 16 and the taper may be formed by tapping the shaft member 10 and the sleeve 20 into the first bolt hole 113 and the second bolt hole 123.
- the hole 23 may be fitted. In this case, the cost of the shaft member 10 can be reduced.
- first screw hole 19 of the shaft member 10 and the second screw hole 24 of the sleeve 20 may not necessarily be provided, and the formation position, the number, and the like are not limited to those in the above embodiment.
- the chamfers 15a and 15b may not be provided.
- the tapered portion 16, the fitting columnar portion 13, the tapered portion 16 and the male screw portion 17 may be provided smoothly and continuously on the outer peripheral surface.
- the mounting direction of the shaft member 10 and the sleeve 20 may be reversed.
- the shaft member 10 can be installed from the second bolt hole 123 side, and the sleeve 20 can be installed from the first bolt hole 113 side.
- L 1 , L 2 , L 3 , L 4 and L 5 it is necessary to consider the above-mentioned dimensions L 1 , L 2 , L 3 , L 4 and L 5 in the same manner.
- first rotor 110 and the second rotor 120 are directly connected in the above-described embodiment, for example, with the connection shaft interposed between the first rotor 110 and the second rotor 120, these first rotors may be used.
- the connecting jig 1 can also be used when connecting the 110 and the second rotor 120.
- axial alignment can be easily performed by the shaft member having the tapered portion and the sleeve having the tapered hole.
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Abstract
Description
本発明の第一の態様に係る回転機械のロータ接続用治具は、第一ロータの端部に設けられた第一フランジ部と、第二ロータの端部に設けられた第二フランジ部とを突き合わせ、前記第一フランジ部に形成された第一ボルト孔と前記第二フランジ部に形成された第二ボルト孔とへボルトを挿通して前記第一ロータと前記第二ロータとを接続する際に使用する回転機械のロータ接続用治具であって、前記第一ボルト孔内に配置されて前記第一ボルト孔に嵌合される嵌合柱状部を有する軸部材と、前記第二ボルト孔内に配置されて前記第二ボルト孔に嵌合される嵌合筒状部を有するスリーブと、を備える。前記軸部材は、前記嵌合柱状部の端部に形成され、前記第一ボルト孔から前記第二ボルト孔に向かって漸次縮径するテーパ部をさらに有し、前記スリーブにおける前記嵌合筒状部には、前記スリーブの軸を中心として前記第二ボルト孔から前記第一ボルト孔に向かって漸次拡径されて前記テーパ部に嵌合可能なテーパ孔が形成されている。
図1及び図2A、Bに示すように、ロータ100は、第一ロータ110と、第一ロータ110の一端に接続された第二ロータ120とで構成される。第一ロータ110及び第二ロータ120の軸線は相互に一致し、かつロータ100の軸線Oをなしている。第一ロータ110及び第二ロータ120からなるロータ100は、軸線Oを中心に回転可能である。
そして、第一ロータ110と第二ロータ120とが同心軸上で突き合わされた際には、第一ボルト孔113と第二ボルト孔123とがちょうど同じ周方向位置に配置されるように、これら第一ボルト孔113及び第二ボルト孔123が形成されている。また、第一ボルト孔113と第二ボルト孔123とは、孔の内径寸法が同一となっている。
図3に示すように、接続用治具1は、第一ボルト孔113に嵌合されて第一ボルト孔113から第二ボルト孔123にわたって配置される軸部材10と、第二ボルト孔123に嵌合されるとともに軸部材10に外周側から嵌合するスリーブ20とを備えている。
さらに、軸部材10は、嵌合柱状部13の第二の方向側D2の端部に面取り部15aを介して形成されたテーパ部16と、テーパ部16の第二の方向側D2の端部に面取り部15bを介して形成された雄ネジ部17とを有している。
図6及び図7A~Cに示すように、ロータ100の接続方法は、第一ロータ110と第二ロータ120とを対向させて配置して接続用治具1を準備する接続準備工程S1と、接続用治具1を設置する治具設置工程S2とを備えている。
また、治具設置工程S2で接続用治具1を設置した箇所以外の第一ボルト孔113及び第二ボルト孔へボルト30(図7C参照)を設置するボルト設置工程S3を備えている。
さらに、治具設置工程S2及びボルト設置工程S3の後に、接続用治具1を取り外す治具取り外し工程S4と、接続用治具1を取り外した第一ボルト孔113及び第二ボルト孔へボルト30を設置するボルト最終設置工程S5とを備えている。
そして、接続用治具1がロータ100に残留した状態でロータ100が使用されることがなく、大きな強度が不要となることや、繰り返しの使用も可能であるため、大きなコストメリットを期待できる。
例えば、軸部材10には六角穴12、雄ネジ部17を必ずしも設けなくともよく、軸部材10及びスリーブ20を第一ボルト孔113及び第二ボルト孔123に叩き込むことで、テーパ部16とテーパ孔23とを嵌合させてもよい。この場合、軸部材10のコストを抑えることができる。
10 軸部材
11 頭部
12 六角穴(工具穴)
13 嵌合柱状部
14 ストッパ部
15a、15b 面取り部
16 テーパ部
17 雄ネジ部
19 第一ネジ穴
20 スリーブ
21 嵌合筒状部
22 スリーブストッパ部
23 テーパ孔
24 第二ネジ穴
30 ボルト
31a、31b ナット
100 ロータ
110 第一ロータ
111 第一本体部
112 第一フランジ部
113 第一ボルト孔
120 第二ロータ
121 第二本体部
122 第二フランジ部
123 第二ボルト孔
P1 軸
P2 軸
D1 第一の方向側
D2 第二の方向側
O 軸線
S1 接続準備工程
S2 治具設置工程
S3 ボルト設置工程
S4 治具取り外し工程
S5 ボルト最終設置工程
Claims (6)
- 第一ロータの端部に設けられた第一フランジ部と、第二ロータの端部に設けられた第二フランジ部とを突き合わせ、前記第一フランジ部に形成された第一ボルト孔と前記第二フランジ部に形成された第二ボルト孔とへボルトを挿通して前記第一ロータと前記第二ロータとを接続する際に使用する回転機械のロータ接続用治具であって、
前記第一ボルト孔内に配置されて前記第一ボルト孔に嵌合される嵌合柱状部を有する軸部材と、
前記第二ボルト孔内に配置されて前記第二ボルト孔に嵌合される嵌合筒状部を有するスリーブと、を備え、
前記軸部材は、前記嵌合柱状部の端部に形成され、前記第一ボルト孔から前記第二ボルト孔に向かって漸次縮径するテーパ部をさらに有し、
前記スリーブにおける前記嵌合筒状部には、前記スリーブの軸を中心として前記第二ボルト孔から前記第一ボルト孔に向かって漸次拡径されて前記テーパ部に嵌合可能なテーパ孔が形成されている回転機械のロータ接続用治具。 - 前記軸部材は、前記第一ボルト孔側の端部から、前記軸部材の軸を中心として前記軸の方向に凹んで形成された工具穴と、
前記テーパ部の端部に形成されて、前記第一ボルト孔から前記第二ボルト孔に向かって延びる雄ネジ部とを有する請求項1に記載の回転機械のロータ接続用治具。 - 前記嵌合筒状部の軸の方向における寸法は、前記ボルトの挿通される方向における前記第二フランジ部の幅寸法以下である請求項1又は2に記載の回転機械のロータ接続用治具。
- 前記軸部材は、前記第一ボルト孔側の端部から、前記軸部材の軸の方向に凹んで形成された引き抜き具取付用の第一ネジ穴を有する請求項1から3のいずれか一項に記載の回転機械のロータ接続用治具。
- 前記スリーブは、前記第二ボルト孔側の端部から、前記スリーブの軸の方向に凹んで形成された引き抜き具取付用の第二ネジ穴を有する請求項1から4のいずれか一項に記載の回転機械のロータ接続用治具。
- 第一ロータの端部に設けられた第一フランジ部と、第二ロータの端部に設けられた第二フランジ部とを突き合わせ、前記第一フランジ部に形成された複数の第一ボルト孔と前記第二フランジ部に形成された複数の第二ボルト孔とへボルトを挿通して前記第一ロータと前記第二ロータとを接続するロータ接続方法であって、
前記第一ボルト孔内に配置されて前記第一ボルト孔に嵌合される嵌合柱状部を有する軸部材と、前記第二ボルト孔内に配置されて前記第二ボルト孔に嵌合される嵌合筒状部を有するスリーブとを備え、前記軸部材は、前記嵌合柱状部の端部に形成され、前記第一ボルト孔から前記第二ボルト孔に向かって漸次縮径するテーパ部をさらに有し、前記スリーブにおける前記嵌合筒状部には、前記スリーブの軸を中心として前記第二ボルト孔から前記第一ボルト孔に向かって漸次拡径されているテーパ孔が形成されているロータ接続用治具を準備する接続準備工程と、
前記複数の第一ボルト孔のうちのいずれかに前記軸部材の前記嵌合柱状部を嵌合させるとともに、前記第一ボルト孔に対応する前記第二ボルト孔に前記スリーブの前記嵌合筒状部を嵌合させて、さらに前記テーパ部と前記テーパ孔とを嵌合させる治具設置工程と、
前記治具設置工程で前記軸部材及び前記スリーブを嵌合させた以外のいずれかの前記第一ボルト孔及び前記第二ボルト孔に前記ボルトを挿通して設置するボルト設置工程と、
前記治具設置工程及び前記ボルト設置工程の後に、前記治具設置工程で設置した前記軸部材及び前記スリーブを取り外す治具取り外し工程と、
前記治具取り外し工程で前記軸部材及び前記スリーブを取り外した前記第一ボルト孔及び前記第二ボルト孔に前記ボルトを挿通して設置するボルト最終設置工程と、を備えるロータ接続方法。
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