JP2010209871A - Device and method for exchanging bearing of horizontal shaft cylindrical hydraulic machinery - Google Patents

Device and method for exchanging bearing of horizontal shaft cylindrical hydraulic machinery Download PDF

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JP2010209871A
JP2010209871A JP2009059243A JP2009059243A JP2010209871A JP 2010209871 A JP2010209871 A JP 2010209871A JP 2009059243 A JP2009059243 A JP 2009059243A JP 2009059243 A JP2009059243 A JP 2009059243A JP 2010209871 A JP2010209871 A JP 2010209871A
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rotating
bearing
support
rotary
casing
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JP5222186B2 (en
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Sakae Shimizu
栄 清水
Makoto Komiya
真 小宮
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Ebara Corp
株式会社荏原製作所
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/062Dismounting of ball or roller bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54Systems consisting of a plurality of bearings with rolling friction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00Application independent of particular apparatuses
    • F16C2300/30Application independent of particular apparatuses related to direction with respect to gravity
    • F16C2300/32Horizontal, e.g. bearings for supporting a horizontal shaft

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for exchanging bearings of a horizontal shaft cylindrical hydraulic machinery in which rolling bearings pivotally supporting a rotary body can be easily exchanged without taking the rotary body stored inside a casing out of the casing, and a method for exchanging the bearings of the horizontal shaft cylindrical hydraulic machinery. <P>SOLUTION: A tubular pump (the horizontal shaft cylindrical hydraulic machine) 10 includes the rotary body having an impeller 15 and rotary shafts 33, 35 stored in a horizontally arranged casing 11, wherein the rotary shafts 33, 35 are rotatably pivotally supported by the rolling bearings 41, 43. The tubular pump 10 includes jack bolts 65, 69 for vertically moving the rotary body (the impeller 15 and the rotary shafts 33, 35) by vertically moving bearing cases 37, 39 incorporating the rolling bearings 41, 43, and rotary body supporting beams 81, 83 and bases 75, 79 for loading the rotary body and supporting the weight of the rotary body in place of the rolling bearings 41, 43 by vertically moving the rotary body by the jack bolts 65, 69. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、チューブラポンプなどの横軸円筒型水力機械に関し、特に横軸円筒型水力機械の軸受交換装置及び軸受交換方法に関するものである。   The present invention relates to a horizontal-axis cylindrical hydraulic machine such as a tubular pump, and more particularly to a bearing replacement device and a bearing replacement method for a horizontal-axis cylindrical hydraulic machine.
従来、チューブラポンプは、各種排水設備(例えば洪水排水設備、下水道雨水排水設備など)や各種揚水設備などに利用されている。そしてこの種のチューブラポンプの中には、例えば特許文献1の図3に示すように、横置きにした筒状のケーシングの内部に、羽根車及び羽根車を回転駆動する駆動機及び駆動機の回転動力を羽根車に伝達する回転軸などを収納して構成されるものがある。この種のチューブラポンプは、その吸込側が吸込水槽(吸込水路)に、その吐出側が吐出水槽(吐出水路)に接続されるように現地にて据え付けられる。そして羽根車を回転駆動すれば、吸込水槽(吸込水路)から吐出水槽(吐出水路)に向かってケーシング内を流体が移送される。   Conventionally, tubular pumps are used in various drainage facilities (for example, flood drainage facilities, sewer stormwater drainage facilities, etc.) and various pumping facilities. In this type of tubular pump, for example, as shown in FIG. 3 of Patent Document 1, a driving machine and a driving machine for rotationally driving an impeller and an impeller are installed inside a horizontally disposed cylindrical casing. Some are configured to house a rotating shaft that transmits rotational power to the impeller. This type of tubular pump is installed on site such that its suction side is connected to a suction water tank (suction water channel) and its discharge side is connected to a discharge water tank (discharge water channel). And if an impeller is rotationally driven, the fluid will be transferred in the casing toward a discharge water tank (discharge water channel) from a suction water tank (suction water channel).
特開2004−190567号公報JP 2004-190567 A
上記従来のチューブラポンプは、ケーシングの内部に収納された羽根車が回転軸に固定され、この回転軸が転がり軸受によって回転自在に軸支され、羽根車と回転軸とは一体的に回転している。従って、この転がり軸受には、常に羽根車と回転軸とを含む回転体の自重がかかっている。このため転がり軸受の取り換えは、前記回転体をケーシングから取り出した上で行う必要があり、その取り換え作業は非常に煩雑であった。   In the above-described conventional tubular pump, an impeller housed in a casing is fixed to a rotating shaft, and the rotating shaft is rotatably supported by a rolling bearing, and the impeller and the rotating shaft rotate integrally. Yes. Accordingly, the rolling bearing always bears the weight of the rotating body including the impeller and the rotating shaft. For this reason, it is necessary to replace the rolling bearing after the rotating body is taken out of the casing, and the replacement operation is very complicated.
また、例えば、すべり軸受など他の軸受装置は、2つ割りできるタイプもあり、回転体の自重を受けたまま軸受本体を交換できることがあるが、転がり軸受は、その機構上、2つ割りできるタイプは無く、回転体の自重を受けたまま軸受装置を交換することができなかった。   In addition, for example, there are types in which other bearing devices such as a slide bearing can be divided into two, and the bearing body can be replaced while receiving the weight of the rotating body. However, a rolling bearing can be divided into two due to its mechanism. There was no type, and the bearing device could not be replaced while receiving the weight of the rotating body.
本発明は上述の点に鑑みてなされたものでありその目的は、回転体をケーシングから取り出すことなく、この回転体を支持している転がり軸受を容易に取り換えることができる横軸円筒型水力機械の軸受交換装置及び軸受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 to provide a horizontal-axis cylindrical hydraulic machine capable of easily replacing a rolling bearing supporting the rotating body without removing the rotating body from the casing. The present invention provides a bearing replacement device and a bearing replacement method.
本願請求項1に記載の発明は、横置きにしたケーシング内部に回転体を収納し、前記回転体に設けた回転軸を転がり軸受にて回転自在に軸支してなる横軸円筒型水力機械の軸受交換装置において、前記転がり軸受を内蔵している軸受ケ−スを上下動することで前記回転体を上下動させるジャッキ機構と、前記ジャッキ機構によって回転体を上下動することで回転体を載せて前記転がり軸受の代りに回転体の重量を支える回転体支持機構と、を有することを特徴とする横軸円筒型水力機械の軸受交換装置にある。   The invention according to claim 1 of the present application is a horizontal-axis cylindrical hydraulic machine in which a rotating body is accommodated in a horizontally placed casing, and a rotating shaft provided on the rotating body is rotatably supported by a rolling bearing. In this bearing exchange device, a jack mechanism that moves the rotating body up and down by moving up and down a bearing case containing the rolling bearing, and a rotating body that moves up and down by the jack mechanism. A bearing exchanging device for a horizontal-axis cylindrical hydraulic machine characterized by having a rotating body support mechanism that supports the weight of the rotating body instead of the rolling bearing.
本願請求項2に記載の発明は、請求項1に記載の横軸円筒型水力機械の軸受交換装置において、前記回転体支持機構は、前記回転体の下方に設置した台座と、前記台座と前記回転体の隙間に設置されて前記回転体を載せる回転体支持ビームとを具備して構成されていることを特徴とする横軸円筒型水力機械の軸受交換装置にある。   The invention according to claim 2 of the present application is the bearing exchange device for a horizontal-axis cylindrical hydraulic machine according to claim 1, wherein the rotating body support mechanism includes a base installed below the rotating body, the base, A bearing exchanging device for a horizontal-axis cylindrical hydraulic machine characterized by comprising a rotating body support beam that is installed in a gap between rotating bodies and on which the rotating body is placed.
本願請求項3に記載の発明は、前記横軸円筒型水力機械は前記回転体を回転駆動することで前記ケーシングの吸込側から吐出側に向かって流体を移送するチューブラポンプであり、請求項1に記載の横軸円筒型水力機械の軸受交換装置を備えたことを特徴とするチューブラポンプにある。   The invention according to claim 3 of the present application is a tubular pump in which the horizontal-axis cylindrical hydraulic machine transfers fluid from the suction side to the discharge side of the casing by rotationally driving the rotating body. A tubular pump comprising the bearing exchange device for the horizontal-axis cylindrical hydraulic machine described in 1 above.
本願請求項4に記載の発明は、横置きにしたケーシング内部に回転体を収納し、前記回転体に設けた回転軸を転がり軸受にて回転自在に軸支してなる横軸円筒型水力機械の軸受交換方法において、前記転がり軸受を内蔵している軸受ケ−スをジャッキ機構によって上昇させる工程と、前記上昇させた回転体の下側に回転体支持機構を設置した後に前記ジャッキ機構によって回転体を降ろして前記転がり軸受の代りに前記回転体支持機構に回転体の重量を支えさせる工程と、前記転がり軸受の交換を行う工程と、前記ジャッキ機構によって前記軸受ケ−スを上昇させて前記回転体支持機構による回転体の支持を解除し、その後前記ジャッキ機構によって回転体を降ろして前記転がり軸受に回転体の重量を支えさせる工程と、を有することを特徴とする横軸円筒型水力機械の軸受交換方法にある。   The invention according to claim 4 of the present application is a horizontal-axis cylindrical hydraulic machine in which a rotating body is housed in a horizontally placed casing and a rotating shaft provided on the rotating body is rotatably supported by a rolling bearing. In the above bearing replacement method, the step of raising the bearing case containing the rolling bearing by the jack mechanism, and the rotating mechanism supporting mechanism installed below the raised rotating body are rotated by the jack mechanism. Lowering the body and allowing the rotating body support mechanism to support the weight of the rotating body instead of the rolling bearing; replacing the rolling bearing; raising the bearing case by the jack mechanism; Removing the support of the rotating body by the rotating body support mechanism, and then lowering the rotating body by the jack mechanism to support the weight of the rotating body on the rolling bearing. In the horizontal axis cylindrical hydraulic machine of bearing replacement method for.
請求項1に記載の発明によれば、ジャッキ機構によって軸受ケースをジャッキアップまたはダウンさせることで、回転体を回転体支持機構に載せてその重量を支えることができる。これによって回転体の重量がかからなくなった軸受を容易に交換することができる。   According to the first aspect of the present invention, the weight can be supported by placing the rotating body on the rotating body support mechanism by jacking up or down the bearing case by the jack mechanism. As a result, it is possible to easily replace the bearing whose weight of the rotating body is not increased.
請求項2に記載の発明によれば、回転体支持機構を台座と回転体支持ビームとによって構成したので、軸受ケースをジャッキアップすることによって回転体と台座の間に回転体支持ビームを挿入できる隙間を形成してこの隙間に回転体支持ビームを挿入し、その後前記軸受ケ−スを下げることによって回転体を回転体支持ビーム上に載せてその重量を支持することで、容易に軸受ケース及び転がり軸受に回転体の重量がかからない状態とすることができ、転がり軸受の交換を容易に行うことができる。また台座と回転体支持ビームとによって回転体支持機構を構成したので、回転体支持機構の構造を簡単にすることができる。   According to the invention described in claim 2, since the rotating body support mechanism is constituted by the base and the rotating body support beam, the rotating body support beam can be inserted between the rotating body and the base by jacking up the bearing case. By forming a gap and inserting the rotor support beam into the gap, and then lowering the bearing case, the rotor is placed on the rotor support beam to support its weight. The rolling bearing can be made in a state where the weight of the rotating body is not applied, and the rolling bearing can be easily replaced. Further, since the rotator support mechanism is configured by the base and the rotator support beam, the structure of the rotator support mechanism can be simplified.
請求項3に記載の発明によれば、本発明をチューブラポンプに適用でき、チューブラポンプの回転体を支持する転がり軸受を容易に交換することができる。   According to invention of Claim 3, this invention can be applied to a tubular pump and the rolling bearing which supports the rotary body of a tubular pump can be replaced | exchanged easily.
請求項4に記載の発明によれば、横軸円筒型水力機械の転がり軸受の交換を、軸受ケース及び転がり軸受に回転体の重量がかからない状態で容易に行うことができる。   According to the fourth aspect of the present invention, the rolling bearing of the horizontal-axis cylindrical hydraulic machine can be easily replaced in a state where the weight of the rotating body is not applied to the bearing case and the rolling bearing.
本発明を適用したチューブラポンプ10を据付構造体100内に据え付けた状態を示す全体概略構成図である。It is the whole schematic block diagram which shows the state which installed the tubular pump 10 to which this invention was applied in the installation structure 100. FIG. 羽根車15の周辺部分を拡大して示す概略断面図である。It is a schematic sectional drawing which expands and shows the peripheral part of the impeller 15. チューブラポンプ10の軸受交換手順説明図である。It is a bearing exchange procedure explanatory drawing of the tubular pump.
以下、本発明の実施形態を図面を参照して詳細に説明する。
図1は本発明を適用した横軸円筒型水力機械10を据付構造体100内に据え付けた状態を示す全体概略構成図である。横軸円筒型水力機械10としてこの例ではポンプ全体が真直な水路として設置されるチューブラポンプを用いている。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an overall schematic configuration diagram showing a state in which a horizontal-axis cylindrical hydraulic machine 10 to which the present invention is applied is installed in an installation structure 100. In this example, a tubular pump in which the entire pump is installed as a straight water channel is used as the horizontal-axis cylindrical hydraulic machine 10.
チューブラポンプ10は、据付構造体100に横置きの状態で一部埋設して据え付けられる円筒形状のケーシング(以下「外ケーシング」という)11と、外ケーシング11の内部に設置された駆動部13によって回転駆動される回転軸33、35とを備えている。駆動部13は外ケーシング11内に設置した内ケーシング21内部に載置される駆動機(電動機)17と、駆動機17の回転速度を減速してその動力を回転軸33、35に伝達する減速機19を備えて構成されている。回転軸33、35に固定された羽根車15はインペラハブ23の外周に複数枚のインペラブレード25を取り付けて構成されており、その前方(吸込側)には吸込側内ケーシング27が取り付けられている。吸込み側内ケーシング27の周囲にはインレットベーン29が取り付けられ、また内ケーシング21の周囲にはガイドベーン31が取り付けられている。羽根車15のインペラハブ23の前方と後方(上流側と下流側)には、それぞれ回転軸33,35が取り付けられており、それぞれ軸受ケース37,39内の下記する軸受41,43に回転自在に軸支されている。回転軸35と減速機19の出力側とは、連結軸47とその両端のカップリング部49,51によって連結されている。なお駆動機17と減速機19と軸受ケース39は内ケーシング21内に設置した支持部材53上に載置して取り付けられ、前記軸受ケース37は吸込側内ケーシング27内に設置した支持部材55上に載置して取り付けられている。   The tubular pump 10 includes a cylindrical casing (hereinafter referred to as an “outer casing”) 11 that is partially embedded and installed in a horizontal state in the installation structure 100, and a drive unit 13 that is installed inside the outer casing 11. Rotating shafts 33 and 35 that are rotationally driven are provided. The drive unit 13 is a drive machine (electric motor) 17 placed inside the inner casing 21 installed in the outer casing 11, and a speed reduction that reduces the rotational speed of the drive machine 17 and transmits the power to the rotary shafts 33 and 35. A machine 19 is provided. The impeller 15 fixed to the rotating shafts 33 and 35 is configured by attaching a plurality of impeller blades 25 to the outer periphery of the impeller hub 23, and a suction side inner casing 27 is attached to the front (suction side) thereof. . An inlet vane 29 is attached around the suction side inner casing 27, and a guide vane 31 is attached around the inner casing 21. Rotating shafts 33 and 35 are respectively attached to the front and rear (upstream side and downstream side) of the impeller hub 23 of the impeller 15, and can rotate freely on bearings 41 and 43 described below in the bearing cases 37 and 39, respectively. It is pivotally supported. The rotating shaft 35 and the output side of the speed reducer 19 are connected by a connecting shaft 47 and coupling portions 49 and 51 at both ends thereof. The drive unit 17, the speed reducer 19, and the bearing case 39 are mounted and mounted on a support member 53 installed in the inner casing 21, and the bearing case 37 is mounted on the support member 55 installed in the suction side inner casing 27. It is mounted and mounted on.
一方据付構造体100は、この例ではコンクリートなどの躯体によって構成されており、その両側に吸込水路101と吐出水路103とを設置している。据付構造体100は外ケーシング11の吸込側の外周部分と吐出側の外周部分とをその内部に埋設することでチューブラポンプ10を据え付けており、中間部分には外ケーシング11の一部を露出する室105が設けられている。室105には外ケーシング11の内の少なくとも羽根車15を収納している羽根車外周部分11Aが位置しており、またその前方(吸込側)の外ケーシング11に設けられているマンホール12も室105内に位置している。マンホール12は、外ケーシング11内に作業者が出入りするためのものである。なおこのチューブラポンプ10の外ケーシング11の内径は約4m程度であり、内部に人が出入りできる。   On the other hand, in this example, the installation structure 100 is constituted by a frame such as concrete, and a suction water channel 101 and a discharge water channel 103 are installed on both sides thereof. The installation structure 100 has the tubular pump 10 installed by embedding the outer peripheral portion on the suction side and the outer peripheral portion on the discharge side of the outer casing 11, and a part of the outer casing 11 is exposed in the middle portion. A chamber 105 is provided. In the chamber 105, an outer peripheral portion 11A of the outer casing 11 housing at least the impeller 15 is located, and a manhole 12 provided in the outer casing 11 in front (suction side) thereof is also a chamber. 105. The manhole 12 is for an operator to enter and exit the outer casing 11. In addition, the inner diameter of the outer casing 11 of this tubular pump 10 is about 4 m, and a person can go in and out.
図2は羽根車15の周辺部分を拡大して示す概略断面図である。同図に示すように、羽根車15のインペラハブ23の前方と後方(上流側と下流側)に取り付けた回転軸33,35は、それぞれ軸受ケース37,39内の転がり軸受41,43に回転自在に軸支されている。軸受ケース37は箱型のケース本体37Aの一方の側面に設けた開口を側板37Bによって塞いで構成されている。同様に軸受ケース39は箱型のケース本体39Aの一方の側面に設けた開口を側板39Bによって塞いで構成されている。軸受ケース37はその後方(下流側)の面に回転軸33を貫通する貫通孔を有し、この貫通孔と回転軸33との間はシール部材57によってシールされている。また軸受ケース39はその前方と後方(上流側と下流側)の両面に回転軸35を貫通する貫通孔を有し、これら貫通孔と回転軸35との間はシール部材59,61によってシールされている。   FIG. 2 is a schematic cross-sectional view showing an enlarged peripheral portion of the impeller 15. As shown in the figure, rotating shafts 33 and 35 attached to the front and rear (upstream and downstream) sides of the impeller hub 23 of the impeller 15 are rotatable to rolling bearings 41 and 43 in bearing cases 37 and 39, respectively. Is pivotally supported. The bearing case 37 is configured by closing an opening provided on one side surface of a box-shaped case main body 37A with a side plate 37B. Similarly, the bearing case 39 is configured by closing an opening provided on one side surface of a box-shaped case main body 39A with a side plate 39B. The bearing case 37 has a through hole penetrating the rotary shaft 33 on the rear (downstream) surface thereof, and a seal member 57 seals between the through hole and the rotary shaft 33. The bearing case 39 has through holes that penetrate the rotating shaft 35 on both the front and rear (upstream and downstream) sides, and the through holes and the rotating shaft 35 are sealed by seal members 59 and 61. ing.
軸受ケース37の底部には底板63が取り付けられ、この底板63には複数本のジャッキボルト65が取り付けられている。ジャッキボルト65は底板63を上下に貫通するように螺合されており、その下端は支持部材55上に当接し、軸受ケース37を支えている。したがってジャッキボルト65を回転することで軸受ケース37は上下動する。すなわちこの軸受ケース37を上下動するジャッキボルト65によってジャッキ機構が構成されている。   A bottom plate 63 is attached to the bottom of the bearing case 37, and a plurality of jack bolts 65 are attached to the bottom plate 63. The jack bolt 65 is screwed so as to penetrate the bottom plate 63 in the vertical direction, and the lower end of the jack bolt 65 abuts on the support member 55 to support the bearing case 37. Therefore, the bearing case 37 moves up and down by rotating the jack bolt 65. That is, a jack mechanism is constituted by jack bolts 65 that move up and down the bearing case 37.
軸受ケース39の底部にも底板67が取り付けられ、この底板67には複数本のジャッキボルト69が取り付けられている。ジャッキボルト69は底板67を上下に貫通するように螺合されており、その下端は支持部材53上に当接し、軸受ケース39を支えている。したがってジャッキボルト69を回転することで軸受ケース39は上下動する。すなわちこの軸受ケース39を上下動するジャッキボルト69によってジャッキ機構が構成されている。   A bottom plate 67 is also attached to the bottom of the bearing case 39, and a plurality of jack bolts 69 are attached to the bottom plate 67. The jack bolt 69 is screwed so as to penetrate the bottom plate 67 up and down, and a lower end thereof abuts on the support member 53 to support the bearing case 39. Therefore, by rotating the jack bolt 69, the bearing case 39 moves up and down. That is, a jack mechanism is constituted by jack bolts 69 that move up and down the bearing case 39.
内ケーシング21の回転軸35を貫通している側壁73の内部側には台座79が水平方向に向かって突出して設けられている。台座79は回転軸35の下方に設置されることで、その上面が回転軸35の下面に所定距離離間して配置されている。なおこの台座79と下記する回転体支持ビーム83とによって回転体支持機構が構成される。   A pedestal 79 is provided on the inner side of the side wall 73 passing through the rotation shaft 35 of the inner casing 21 so as to protrude in the horizontal direction. The pedestal 79 is installed below the rotation shaft 35, so that the upper surface of the pedestal 79 is disposed at a predetermined distance from the lower surface of the rotation shaft 35. The pedestal 79 and the rotator support beam 83 described below constitute a rotator support mechanism.
吸込側内ケーシング27の回転軸33を貫通している側壁77の内部側にも台座75が水平方向に向かって突出して設けられている。台座75は回転軸33の下方に設置されることで、その上面が回転軸33の下面に所定距離離間して配置されている。なおこの台座75と下記する回転体支持ビーム81とによって回転体支持機構が構成される。   A pedestal 75 is also provided projecting in the horizontal direction on the inner side of the side wall 77 passing through the rotation shaft 33 of the suction side inner casing 27. The pedestal 75 is installed below the rotary shaft 33 so that the upper surface of the pedestal 75 is spaced apart from the lower surface of the rotary shaft 33 by a predetermined distance. The pedestal 75 and the rotator support beam 81 described below constitute a rotator support mechanism.
そして上記ジャッキボルト65,69によって構成されるジャッキ機構と、台座75,79及び下記する回転体支持ビーム81,83によって構成される回転体支持機構とによって本願発明にかかる軸受交換装置が構成される。   And the bearing replacement apparatus concerning this invention is comprised by the jack mechanism comprised by the said jack volt | bolts 65 and 69, and the rotary body support mechanism comprised by the bases 75 and 79 and the rotary body support beams 81 and 83 mentioned below. .
以上のように構成されたチューブラポンプ10において、駆動機17を駆動すると減速機19を介して回転軸33、35に固定された羽根車15が回転され、吸込水路101側の水が外ケーシング11の吸込口111から吸い込まれ、インペラブレード25やガイドベーン31を通過して吐出口113から吐出水路103側に吐き出される。   In the tubular pump 10 configured as described above, when the drive unit 17 is driven, the impeller 15 fixed to the rotary shafts 33 and 35 is rotated via the speed reducer 19, and the water on the suction water channel 101 side is supplied to the outer casing 11. Is sucked from the suction port 111, passes through the impeller blade 25 and the guide vane 31, and is discharged from the discharge port 113 to the discharge water channel 103 side.
一方、転がり軸受41,43が破損などした際にこれを取り換える場合は、まず図2に示すカップリング部49及び連結軸47を回転軸35から取り外す。次にジャッキボルト65,69を操作することによって、両軸受ケース37,39を上昇させ、両軸受ケ−ス37,39とともに回転体(羽根車15及び回転軸33,35)を上昇させる(ジャッキアップ工程)。上昇させる寸法は、下記する回転体支持ビーム81,83を挿入できるようにするためのわずかな寸法でよい。   On the other hand, when replacing the rolling bearings 41 and 43 when they are damaged, first, the coupling portion 49 and the connecting shaft 47 shown in FIG. Next, by operating the jack bolts 65 and 69, both the bearing cases 37 and 39 are raised, and the rotating bodies (the impeller 15 and the rotating shafts 33 and 35) are raised together with the both bearing cases 37 and 39 (jacks). Up process). The dimension to be raised may be a small dimension so that the rotating body support beams 81 and 83 described below can be inserted.
次に図3に示すように、上昇させた回転軸33,35と台座75,79との間の隙間に、回転体支持ビーム81,83を挿入・設置する。そして前記ジャッキボルト65,69を操作することによって、両軸受ケース37,39を下降させ、両軸受ケ−ス37,39とともに回転体(羽根車15及び回転軸33,35)を下降させて両回転軸33,35を回転体支持ビーム81,83に載せ、転がり軸受41,43の代りに回転体支持ビーム81,83に回転体(羽根車15及び回転軸33,35)の重量を支持させる(回転体支持工程)。   Next, as shown in FIG. 3, the rotating body support beams 81 and 83 are inserted and installed in the gaps between the raised rotating shafts 33 and 35 and the pedestals 75 and 79. Then, by operating the jack bolts 65 and 69, both the bearing cases 37 and 39 are lowered, and the rotating bodies (the impeller 15 and the rotating shafts 33 and 35) are lowered together with the both bearing cases 37 and 39. The rotary shafts 33 and 35 are mounted on the rotary body support beams 81 and 83, and the rotary body support beams 81 and 83 support the weight of the rotary body (the impeller 15 and the rotary shafts 33 and 35) instead of the rolling bearings 41 and 43. (Rotating body support process).
この状態では転がり軸受41,43には回転体(羽根車15及び回転軸33,35)の重量が支持されていないので、この状態のまま転がり軸受41,43を回転軸33,35から抜き出し、取り換えることが可能になる。すなわち回転軸33から転がり軸受41を取り外して交換等を行う場合は、まず軸受ケース37から側板37Bを取り外し、次に回転軸33から転がり軸受41を取り外し、次に新たな転がり軸受41を回転軸33に装着し、最後に軸受ケース37に側板37Bを取り付ける。一方回転軸35から転がり軸受43を取り外して交換等を行う場合は、まず軸受ケース39から側板39Bを取り外して回転軸35から抜き取り、次に回転軸35から転がり軸受43を取り外し、次に新たな転がり軸受43を回転軸35に装着し、最後に軸受ケース39に側板39Bを取り付ける(軸受交換等工程)。   In this state, since the weight of the rotating body (the impeller 15 and the rotating shafts 33 and 35) is not supported by the rolling bearings 41 and 43, the rolling bearings 41 and 43 are extracted from the rotating shafts 33 and 35 in this state, It can be replaced. That is, when the rolling bearing 41 is removed from the rotating shaft 33 for replacement, the side plate 37B is first removed from the bearing case 37, then the rolling bearing 41 is removed from the rotating shaft 33, and then the new rolling bearing 41 is moved to the rotating shaft. 33, and finally the side plate 37B is attached to the bearing case 37. On the other hand, when the rolling bearing 43 is removed from the rotating shaft 35 for replacement, the side plate 39B is first removed from the bearing case 39 and extracted from the rotating shaft 35, and then the rolling bearing 43 is removed from the rotating shaft 35, and then a new one is removed. The rolling bearing 43 is mounted on the rotating shaft 35, and finally the side plate 39B is attached to the bearing case 39 (steps such as bearing replacement).
上記軸受交換作業が終了すると、前記ジャッキボルト65,69を操作することによって、両軸受ケース37,39及び回転体(羽根車15と回転軸33,35)を上昇させて前記回転体支持ビーム81,83を取り除き、回転体支持ビーム81,83による回転体(羽根車15及び回転軸33,35)の支持を解除する(回転体支持解除工程)。   When the above-described bearing replacement operation is completed, by operating the jack bolts 65 and 69, both the bearing cases 37 and 39 and the rotating body (the impeller 15 and the rotating shafts 33 and 35) are raised, and the rotating body support beam 81 is moved. , 83 are removed, and the support of the rotating body (the impeller 15 and the rotating shafts 33, 35) by the rotating body support beams 81, 83 is released (rotating body support releasing step).
そして前記ジャッキボルト65,69を操作することによって、両軸受ケース37,39及び回転体(羽根車15と回転軸33,35)を元の位置まで下降し(現状復帰工程)、図2に示すようにカップリング部49等を元の状態に取り付ける。これによってチューブラポンプ10の軸受交換作業が完了する。   Then, by operating the jack bolts 65 and 69, the two bearing cases 37 and 39 and the rotating body (the impeller 15 and the rotating shafts 33 and 35) are lowered to the original positions (current return process), as shown in FIG. In this manner, the coupling portion 49 and the like are attached to the original state. Thereby, the bearing replacement work of the tubular pump 10 is completed.
以上説明したように上記実施形態によれば、ジャッキボルト(ジャッキ機構)65,69によって軸受ケース37,39をジャッキアップまたはダウンさせることで、回転体(羽根車15及び回転軸33,35)を回転体支持機構(回転体支持ビーム81,83及び台座75,79)に載せてその重量を支えることができる。これによって回転体(羽根車15及び回転軸33,35)の重量がかからなくなった転がり軸受41,43を容易に着脱でき、転がり軸受41,43の交換やメンテナンスを容易に行うことが可能になる。つまり、回転体をケーシングから取り出すことなく、この回転体を支持している転がり軸受41,43を容易に着脱などすることができる。   As described above, according to the above-described embodiment, the bearing cases 37 and 39 are jacked up or down by the jack bolts (jack mechanisms) 65 and 69 so that the rotating body (the impeller 15 and the rotating shafts 33 and 35) can be moved. It can be mounted on a rotating body support mechanism (rotating body support beams 81 and 83 and pedestals 75 and 79) to support its weight. This makes it possible to easily attach and detach the rolling bearings 41 and 43 in which the weight of the rotating body (the impeller 15 and the rotating shafts 33 and 35) is not increased, and it is possible to easily replace and maintain the rolling bearings 41 and 43. Become. That is, it is possible to easily attach and detach the rolling bearings 41 and 43 that support the rotating body without removing the rotating body from the casing.
またこの実施形態では、回転体支持機構を台座75,79と回転体支持ビーム81,83とによって構成したので、回転体支持機構の構造が簡単であるばかりか、容易に軸受ケース37,39及び転がり軸受41,43に回転体(羽根車15及び回転軸33,35)の重量をかけない状態にすることができ、転がり軸受41,43の交換やメンテナンスを容易に行うことが可能になる。   Further, in this embodiment, since the rotating body support mechanism is constituted by the bases 75 and 79 and the rotating body support beams 81 and 83, not only the structure of the rotating body support mechanism is simple but also the bearing cases 37 and 39 and The rotating bearings (impeller 15 and rotating shafts 33, 35) can be put in a state where the rolling bearings 41, 43 are not subjected to weight, and the rolling bearings 41, 43 can be easily replaced and maintained.
なお上記実施形態において、軸受ケ−ス37,39を、軸芯で上下に水平分割できる構造(水平分割型)に構成しておけば、軸受ケ−ス37,39を上下に分割できるため、転がり軸受41,43の着脱作業性はさらに改善される。   In the above embodiment, the bearing cases 37 and 39 can be divided vertically by configuring the bearing cases 37 and 39 in a structure (horizontal division type) that can be horizontally divided by the shaft core. The attachment / detachment workability of the rolling bearings 41 and 43 is further improved.
以上本発明の実施形態を説明したが、本発明は上記実施形態に限定されるものではなく、特許請求の範囲、及び明細書と図面に記載された技術的思想の範囲内において種々の変形が可能である。なお直接明細書及び図面に記載がない何れの形状や構造であっても、本願発明の作用・効果を奏する以上、本願発明の技術的思想の範囲内である。例えば、上記実施形態では、横軸円筒型水力機械としてチューブラポンプを示したが、他の各種横軸円筒型水力機械、たとえば横軸型の水車などに適用してもよい。また上記実施形態ではチューブラポンプの回転軸の部分を回転体支持ビームで支えたが、回転軸以外の回転体の部分(たとえばインペラハブの部分など)を回転体支持ビームで支えるように構成してもよい。   Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. Note that any shape or structure not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are achieved. For example, in the above-described embodiment, the tubular pump is shown as the horizontal-axis cylindrical hydraulic machine. However, the tubular pump may be applied to various other horizontal-axis cylindrical hydraulic machines, for example, a horizontal-axis water turbine. In the above embodiment, the rotating shaft portion of the tubular pump is supported by the rotating body support beam. However, the rotating body portion other than the rotating shaft (for example, the impeller hub) may be supported by the rotating body support beam. Good.
また上記実施形態では台座と回転体支持ビームとによって回転体支持機構を構成したが、他の各種機構(たとえばワイヤやチェーンなどを用いて回転体を直接釣り上げておく機構など)によって回転体支持機構を構成してもよい。またジャッキ機構の構造も、他の各種構造のものが使用できることは言うまでもない。   In the above embodiment, the rotator support mechanism is configured by the pedestal and the rotator support beam. However, the rotator support mechanism is provided by other various mechanisms (for example, a mechanism that directly lifts the rotator using a wire or a chain). May be configured. Needless to say, other various structures can be used for the jack mechanism.
10 チューブラポンプ(横軸円筒型水力機械)
11 外ケーシング(ケーシング)
13 駆動部
15 羽根車(回転体)
17 駆動機(電動機)
19 減速機
21 内ケーシング
23 インペラハブ
25 インペラブレード
27 吸込側内ケーシング
29 インレットベーン
31 ガイドベーン
33,35 回転軸(回転体)
37,39 軸受ケース
41,43 転がり軸受
53,55 支持部材
63,67 底板
65,69 ジャッキボルト(ジャッキ機構)
75,79 台座(回転体支持機構)
81,83 回転体支持ビーム(回転体支持機構)
100 据付構造体
101 吸込水路
103 吐出水路
10 Tubular pump (horizontal axis cylindrical hydraulic machine)
11 Outer casing (casing)
13 Drive unit 15 Impeller (Rotating body)
17 Drive (electric motor)
19 Reduction gear 21 Inner casing 23 Impeller hub 25 Impeller blade 27 Suction side inner casing 29 Inlet vane 31 Guide vane 33, 35 Rotating shaft (Rotating body)
37, 39 Bearing case 41, 43 Rolling bearing 53, 55 Support member 63, 67 Bottom plate 65, 69 Jack bolt (jack mechanism)
75,79 pedestal (rotary support mechanism)
81, 83 Rotating body support beam (Rotating body support mechanism)
100 Installation structure 101 Suction water channel 103 Discharge water channel

Claims (4)

  1. 横置きにしたケーシング内部に回転体を収納し、前記回転体に設けた回転軸を転がり軸受にて回転自在に軸支してなる横軸円筒型水力機械の軸受交換装置において、
    前記転がり軸受を内蔵している軸受ケ−スを上下動することで前記回転体を上下動させるジャッキ機構と、
    前記ジャッキ機構によって回転体を上下動することで回転体を載せて前記転がり軸受の代りに回転体の重量を支える回転体支持機構と、
    を有することを特徴とする横軸円筒型水力機械の軸受交換装置。
    In a bearing exchange device for a horizontal-axis cylindrical hydraulic machine in which a rotating body is housed in a horizontally placed casing, and a rotating shaft provided on the rotating body is rotatably supported by a rolling bearing.
    A jack mechanism for moving the rotating body up and down by moving up and down a bearing case containing the rolling bearing;
    A rotating body support mechanism that supports the weight of the rotating body instead of the rolling bearing by placing the rotating body by moving the rotating body up and down by the jack mechanism;
    A bearing replacement device for a horizontal-axis cylindrical hydraulic machine characterized by comprising:
  2. 請求項1に記載の横軸円筒型水力機械の軸受交換装置において、
    前記回転体支持機構は、前記回転体の下方に設置した台座と、前記台座と前記回転体の隙間に設置されて前記回転体を載せる回転体支持ビームとを具備して構成されていることを特徴とする横軸円筒型水力機械の軸受交換装置。
    The bearing replacement device for a horizontal-axis cylindrical hydraulic machine according to claim 1,
    The rotator support mechanism includes a pedestal installed below the rotator, and a rotator support beam that is installed in a gap between the pedestal and the rotator and mounts the rotator. A bearing exchange device for a horizontal-axis cylindrical hydraulic machine.
  3. 前記横軸円筒型水力機械は前記回転体を回転駆動することで前記ケーシングの吸込側から吐出側に向かって流体を移送するチューブラポンプであり、
    請求項1に記載の横軸円筒型水力機械の軸受交換装置を備えたことを特徴とするチューブラポンプ。
    The horizontal-axis cylindrical hydraulic machine is a tubular pump that transfers fluid from the suction side to the discharge side of the casing by rotationally driving the rotating body,
    A tubular pump comprising the bearing exchange device for a horizontal-axis cylindrical hydraulic machine according to claim 1.
  4. 横置きにしたケーシング内部に回転体を収納し、前記回転体に設けた回転軸を転がり軸受にて回転自在に軸支してなる横軸円筒型水力機械の軸受交換方法において、
    前記転がり軸受を内蔵している軸受ケ−スをジャッキ機構によって上昇させる工程と、
    前記上昇させた回転体の下側に回転体支持機構を設置した後に前記ジャッキ機構によって回転体を降ろして前記転がり軸受の代りに前記回転体支持機構に回転体の重量を支えさせる工程と、
    前記転がり軸受の交換を行う工程と、
    前記ジャッキ機構によって前記軸受ケ−スを上昇させて前記回転体支持機構による回転体の支持を解除し、その後前記ジャッキ機構によって回転体を降ろして前記転がり軸受に回転体の重量を支えさせる工程と、
    を有することを特徴とする横軸円筒型水力機械の軸受交換方法。
    In a bearing replacement method for a horizontal-axis cylindrical hydraulic machine in which a rotating body is housed in a horizontally placed casing and a rotating shaft provided on the rotating body is rotatably supported by a rolling bearing.
    Raising the bearing case containing the rolling bearing by a jack mechanism;
    A step of lowering the rotating body by the jack mechanism after installing the rotating body support mechanism on the lower side of the raised rotating body and allowing the rotating body support mechanism to support the weight of the rotating body instead of the rolling bearing;
    Replacing the rolling bearing;
    Raising the bearing case by the jack mechanism to release the support of the rotating body by the rotating body support mechanism, and then lowering the rotating body by the jack mechanism to allow the rolling bearing to support the weight of the rotating body; ,
    A bearing replacement method for a horizontal-axis cylindrical hydraulic machine, comprising:
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CN104480918A (en) * 2014-12-15 2015-04-01 扬州大学 Siphoning type water outlet runner with excellent hydraulic property and application method thereof
CN104895145A (en) * 2015-06-15 2015-09-09 扬州大学 Dustpan-shaped inflow channel with excellent hydraulic performance and application method of dustpan-shaped inflow channel
KR101903278B1 (en) 2017-03-17 2018-10-02 지엠 글로벌 테크놀러지 오퍼레이션스 엘엘씨 Water pump bearing assembly having replaceable ball

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JPS6154846A (en) * 1984-08-24 1986-03-19 Hitachi Ltd Roller bearing replacer of motor
JPH0193618A (en) * 1987-10-02 1989-04-12 Hitachi Ltd Bearing device for horizontal rotary shaft in electrical equipment

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JPS58137899U (en) * 1982-03-12 1983-09-16
JPS60237224A (en) * 1984-05-11 1985-11-26 Hitachi Ltd Method of mounting and dismounting roller bearing of slantly installed motor
JPS6154846A (en) * 1984-08-24 1986-03-19 Hitachi Ltd Roller bearing replacer of motor
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104294883A (en) * 2014-10-02 2015-01-21 扬州大学 Front-located shaft type tubular pump water inlet flow passage with excellent hydraulic performance and application method thereof
CN104480918A (en) * 2014-12-15 2015-04-01 扬州大学 Siphoning type water outlet runner with excellent hydraulic property and application method thereof
CN104895145A (en) * 2015-06-15 2015-09-09 扬州大学 Dustpan-shaped inflow channel with excellent hydraulic performance and application method of dustpan-shaped inflow channel
KR101903278B1 (en) 2017-03-17 2018-10-02 지엠 글로벌 테크놀러지 오퍼레이션스 엘엘씨 Water pump bearing assembly having replaceable ball

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