JPH0314129B2 - - Google Patents
Info
- Publication number
- JPH0314129B2 JPH0314129B2 JP58037890A JP3789083A JPH0314129B2 JP H0314129 B2 JPH0314129 B2 JP H0314129B2 JP 58037890 A JP58037890 A JP 58037890A JP 3789083 A JP3789083 A JP 3789083A JP H0314129 B2 JPH0314129 B2 JP H0314129B2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- load
- unit cell
- dummy
- outer ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000004027 cell Anatomy 0.000 description 41
- 238000010586 diagram Methods 0.000 description 3
- 210000005056 cell body Anatomy 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/12—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring axial thrust in a rotary shaft, e.g. of propulsion plants
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
- F16C19/522—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to load on the bearing, e.g. bearings with load sensors or means to protect the bearing against overload
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/23—Gas turbine engines
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
【発明の詳細な説明】
本発明は、軸受に作用するスラスト荷重を精度
良く測定し得るようにしたスラスト荷重測定装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thrust load measuring device that can accurately measure thrust loads acting on bearings.
例えば、航空機エンジン、ガスタービン或は軸
流圧縮機等の回転機械においては、運転時に軸受
に対しスラスト荷重が作用するが、該スラスト荷
重により軸受部に異常が発生すると、その回転機
械全体に大きな損傷を与えることになる。このた
め、従来は、スラスト荷重を或る程度推定、予測
し、構造設計を行つていたが、正確を期すことは
困難であつた。そこで、上記スラスト荷重を実測
することができれば、軸受の寿命の推定、構造設
計等に有利となり、経済設計が可能となる。しか
し、従来は上記回転機械のスラスト荷重を測定す
る装置はなかつた。 For example, in rotating machines such as aircraft engines, gas turbines, and axial flow compressors, thrust loads act on the bearings during operation, but if an abnormality occurs in the bearings due to the thrust loads, it can cause significant damage to the entire rotating machine. It will cause damage. For this reason, conventionally, the thrust load has been estimated and predicted to a certain extent to perform structural design, but it has been difficult to ensure accuracy. Therefore, if the above-mentioned thrust load can be actually measured, it will be advantageous for estimating the life of the bearing, designing the structure, etc., and making economical design possible. However, conventionally there has been no device for measuring the thrust load of the rotating machine.
本発明は、上記観点に鑑み、回転機械の軸受に
作用するスラスト荷重を精度良く測定するための
装置を提供することを目的としてなしたものであ
る。 The present invention has been made in view of the above-mentioned viewpoints, and an object of the present invention is to provide a device for accurately measuring a thrust load acting on a bearing of a rotating machine.
本発明によれば、所要数の受感部を有する荷重
変換器と、全体のばね常数が荷重変換器受感部全
体のばね常数と略等しくなるようにした所要数の
ダミー部材とを、軸受ハウジングに遊嵌合せしめ
た軸受の一側面と他側面とに、夫々分けて別々に
配設し、前記受感部とダミー部材とを夫々外輪の
一側面と他側面とに当接せしめ、受感部とダミー
部材とに初期締付力を付与し得るよう構成してい
る。従つて、回転軸から軸受にスラスト力が作用
すると、受感部とダミー部材とで形成されている
ばね系は変位し、その変位量は荷重変換器の受感
部で歪に比例した強さの電流値として検出され
る。受感部とダミー部材とでは、変位量の絶対値
は等しくなるが方向は逆になる。 According to the present invention, a load transducer having a required number of sensing sections and a required number of dummy members whose overall spring constant is approximately equal to the spring constant of the entire load converter sensing section are connected to a bearing. The sensing portion and the dummy member are respectively disposed separately on one side and the other side of the bearing loosely fitted in the housing, and the sensing portion and the dummy member are brought into contact with one side and the other side of the outer ring, respectively. The structure is such that an initial tightening force can be applied to the sensing portion and the dummy member. Therefore, when a thrust force is applied to the bearing from the rotating shaft, the spring system formed by the sensing part and the dummy member is displaced, and the amount of displacement is proportional to the strain at the sensing part of the load converter. is detected as the current value. The sensing portion and the dummy member have the same absolute value of displacement, but the direction is opposite.
以下、本発明の実施例を添付図面を参照しつつ
説明する。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明の一実施例を示し、所要の回転
機械のフレーム１に軸受ハウジング２を固着し、
該軸受ハウジング２の中空部に、軸受３の外輪４
を、軸受３が軸線方向へ円滑に移動し得るよう遊
嵌合せしめ、軸受３の内輪５に、回転軸６を回転
自在に嵌合せしめ、該内輪５の一側を回転軸６に
固着した鍔７に当接せしめ、内輪５の他側を、軸
受３が回転軸６に対して摺動しないよう、回転軸
６に螺合せしめたナツト８により位置固定を行行
ない、軸受ハウジング２の中空部の一端側に、側
壁９を有するリング状のチヤンバー１０を設け、
該チヤンバー１０に、頂部が外輪４の一側面に当
接する適宜数のダミーセル１１を嵌入せしめ、ダ
ミーセル１１，１１間には、該ダミーセル１１が
円周方向へ移動しないよう、例えば図示していな
いスペーサを介在せしめ、軸受ハウジング２の中
空部の他端側に、荷重変換器を形成するリング状
のホルダー１２を嵌合せしめ、該ホルダー１２に
設けた穴１３に、ユニツトセル１４を嵌入し、該
ユニツトセル１４に側板１２ａを当接させる。該
ユニツトセル１４は頂部が外輪４の他側面に当接
するよう適宜配置することにより荷重変換器の受
感部としている。又軸受ハウジング２の一端に、
ダミーセル１１及びユニツトセル１４に初期締付
力を与えると共にホルダー１２等の抜け止めを兼
ねたナツト１５を螺着めしめる。ユニツトセル１
４及びダミーセル１１の個数は夫々何個でも良い
が、複数個にする場合には、円周方向の間隔を略
等間隔にする。又、ユニツトセル１４とダミーセ
ル１１は数量が同じでも或は異なる数量としても
良いが、ユニツトセル全体のばね常数とダミーセ
ル１１全体のばね常数とが等しくなるようにする
必要がある。 FIG. 1 shows an embodiment of the present invention, in which a bearing housing 2 is fixed to a frame 1 of a required rotating machine,
The outer ring 4 of the bearing 3 is placed in the hollow part of the bearing housing 2.
are loosely fitted so that the bearing 3 can move smoothly in the axial direction, a rotating shaft 6 is rotatably fitted to the inner ring 5 of the bearing 3, and one side of the inner ring 5 is fixed to the rotating shaft 6. The other side of the inner ring 5 is fixed in position by a nut 8 screwed onto the rotating shaft 6 so that the bearing 3 does not slide relative to the rotating shaft 6. A ring-shaped chamber 10 having a side wall 9 is provided at one end side of the part,
An appropriate number of dummy cells 11 whose tops abut against one side of the outer ring 4 are fitted into the chamber 10, and a spacer (not shown), for example, is provided between the dummy cells 11 to prevent the dummy cells 11 from moving in the circumferential direction. A ring-shaped holder 12 forming a load converter is fitted to the other end of the hollow portion of the bearing housing 2, and a unit cell 14 is fitted into the hole 13 provided in the holder 12. 14 is brought into contact with the side plate 12a. The unit cell 14 is appropriately arranged so that its top abuts the other side surface of the outer ring 4, thereby serving as a sensing portion of the load converter. Also, at one end of the bearing housing 2,
A nut 15 which applies an initial tightening force to the dummy cell 11 and unit cell 14 and also serves to prevent the holder 12 etc. from coming off is screwed on. unit cell 1
The number of dummy cells 4 and dummy cells 11 may be any number, but if a plurality of cells are used, the intervals in the circumferential direction should be approximately equal. Further, the unit cell 14 and the dummy cell 11 may have the same or different quantities, but it is necessary that the spring constant of the whole unit cell and the spring constant of the whole dummy cell 11 be equal.
荷重変換器の詳細を第２図〜第４図により説明
すると、軸受３の外輪４に当接する側を球面状と
したユニツトセル１４の反球面側に、外輪４より
作用た荷重Ｐをホルダー１２の側板１２ａに伝達
し得るよう脚部１７を設け、ユニツトセル本体１
６の両側面に凹部１８を設け、該凹部１８の壁面
に剪断歪を検出するためのストレインゲージ１９
を貼付け、凹部１８に耐熱、耐油性の樹脂を充填
すると共にユニツトセル本体１６をステンレス箔
で被覆し、ストレインゲージ１９を熱や油から保
護するようにする。又リング状のホルダー１２の
ユニツトセル１４嵌入部の一側部には、ユニツト
セル１４の脚部１７間の間隔と略同じ間隔でリー
ド線等の取出しのための切欠き２７を設け、脚部
１７，１７間には、リード線取出しのスペースを
除いて保護のために耐熱性樹脂を充填させる。 The details of the load converter will be explained with reference to FIGS. 2 to 4. The load P applied from the outer ring 4 to the opposite spherical side of the unit cell 14 whose side that contacts the outer ring 4 of the bearing 3 is spherical is transferred to the holder 12. A leg portion 17 is provided so that the transmission can be transmitted to the side plate 12a, and the unit cell main body 1
A strain gauge 19 is provided on both sides of the recess 18 for detecting shear strain on the wall surface of the recess 18.
The recess 18 is filled with heat-resistant and oil-resistant resin, and the unit cell body 16 is covered with stainless steel foil to protect the strain gauge 19 from heat and oil. Further, on one side of the ring-shaped holder 12 where the unit cell 14 is inserted, a notch 27 for taking out lead wires, etc. is provided at approximately the same interval as the interval between the legs 17 of the unit cell 14, and the legs 17, 17 is filled with heat-resistant resin for protection, except for the space for taking out the lead wires.
軸受３に作用するスラスト荷重を検出する場合
には、スラスト荷重を測定すべき回転機械に第１
図に示すようにダミーセル１１及びユニツトセル
１４をセツトし、ナツト１５を回転させてダミー
セル１１及びユニツトセル１４に所要の初期締付
力を付与する。この初期締付力を与えることによ
り、ストレインゲージ１９で検出されるスラスト
荷重は実際に回転軸６の軸線方向に掛かるスラス
ト力の1/2の値が検出される。 When detecting the thrust load acting on the bearing 3, the first
As shown in the figure, the dummy cell 11 and unit cell 14 are set, and the nut 15 is rotated to apply a required initial tightening force to the dummy cell 11 and unit cell 14. By applying this initial tightening force, the thrust load detected by the strain gauge 19 is 1/2 of the thrust force actually applied in the axial direction of the rotating shaft 6.
すなわち、第５図に示すごとく、ユニツトセル
１４及びダミーセル１１をばね系と考え、このば
ね系に付与される初期締付力をP0、軸線方向の
スラスト荷重をＦ、スラスト荷重Ｆの作用により
ユニツトセル１４及びダミーセル１１に生じる初
期締付力P0の変化量をΔfとすると、力のバラン
スから
Ｆ＋（P0−Δf）＝（P0＋Δf）
が成立し、これを変形し、整理すると
Ｆ＝P0＋Δf−P0＋Δf＝2Δf
となり、よつてΔf＝Ｆ／２が得られる。 That is, as shown in Fig. 5, the unit cell 14 and the dummy cell 11 are considered to be a spring system, the initial tightening force applied to this spring system is P0 , the thrust load in the axial direction is F, and the unit cell is If the amount of change in the initial tightening force P 0 generated in 14 and the dummy cell 11 is Δf, then F + (P 0 - Δf) = (P 0 + Δf) is established from the balance of forces, and if this is transformed and rearranged, F = P 0 +Δf−P 0 +Δf=2Δf, and thus Δf=F/2 is obtained.
前記したスラスト荷重Ｆとは逆の方向へスラス
ト荷重F′が作用した場合も同様にして
F′＋（P0＋Δf）＝（P0−Δf）
F′＝P0−Δf−P0−Δf＝−2Δf
となり、よつて−Δf＝F′／２となる。この式は、逆
方向のスラスト荷重は逆向きのスラスト荷重とし
て検出されることを意味する。 Similarly, when a thrust load F' acts in the opposite direction to the thrust load F mentioned above, F'+(P 0 +Δf)=(P 0 −Δf) F'=P 0 −Δf−P 0 −Δf = -2∆f, and therefore -∆f = F'/2. This equation means that a thrust load in the opposite direction is detected as a thrust load in the opposite direction.
初期締付力P0を与え、回転軸６を駆動して回
転軸６にスラスト荷重が発生すると、スラスト荷
重は軸受３の内輪５、外輪４を経てユニツトセル
１４及びダミーセル１１に剪断歪を与える。この
剪断歪はユニツトセル１４のストレインゲージ１
９により検出され、電流として所要の演算装置へ
送られ、前記Δfからスラスト荷重Ｆが演算され
る。軸受３の外輪４は軸受ハウジング２に対し遊
嵌合されているためスラスト荷重により軸受３は
円滑に軸線方向へ移動できる。このためユニツト
セル１４、ダミーセル１１はスラスト荷重に比例
して正確に変位し、従つて正確なスラスト荷重の
測定が可能となる。又、ユニツトセル１４に作用
する荷重とストレインゲージ１９の歪による電流
値との関係は予め求めておくことができるため、
これを演算装置へ入力しておけば、容易且つ迅速
にスラスト荷重を求めることができる。 When an initial tightening force P 0 is applied and the rotating shaft 6 is driven to generate a thrust load on the rotating shaft 6, the thrust load applies shear strain to the unit cell 14 and the dummy cell 11 through the inner ring 5 and outer ring 4 of the bearing 3. This shear strain is caused by the strain gauge 1 of the unit cell 14.
9 is detected and sent as a current to a required calculation device, and the thrust load F is calculated from the above-mentioned Δf. Since the outer ring 4 of the bearing 3 is loosely fitted to the bearing housing 2, the bearing 3 can be smoothly moved in the axial direction by a thrust load. Therefore, the unit cell 14 and the dummy cell 11 are accurately displaced in proportion to the thrust load, thus making it possible to accurately measure the thrust load. Furthermore, since the relationship between the load acting on the unit cell 14 and the current value due to strain in the strain gauge 19 can be determined in advance,
By inputting this into the calculation device, the thrust load can be easily and quickly determined.
回転機械は軸受３の部分には油があり、又回転
機械が航空機エンジン等のような場合には、油や
軸受部のまわりは高温になるが、ユニツトセル１
４のストレインゲージ１９を収納した凹部１８に
は耐熱性、耐油性の樹脂が充填され、しかもステ
ンレス箔により全体が被覆されているため、スト
レインゲージ１９が熱や油により損傷されること
は少ない。 In a rotating machine, there is oil in the bearing 3, and if the rotating machine is an aircraft engine, the oil and the area around the bearing will be high temperature, but the unit cell 1
The recess 18 housing the strain gauge 19 of No. 4 is filled with a heat-resistant and oil-resistant resin, and is entirely covered with stainless steel foil, so the strain gauge 19 is unlikely to be damaged by heat or oil.
第６図及び第７図は本発明に使用する荷重変換
器の他の例を示し、前記実施例ではユニツトセル
を独立したブロツク状に形成し、リング状のホル
ダーに設けた穴に嵌合せしめているのに対し、本
例においては、受感部を形成するユニツトセルと
ホルダーとを一体形状とし、剪断歪を検出するよ
うにした例である。すなわち、リング状部材２０
の所要位置に、軸線方向へ突出した球面部２１を
円周方向へ所要の間隔で固着し、リング状部材２
０の反球面部側に隙間２２を設け、球面部２１近
辺のリング状部材２０内外周面に凹部１８を設
け、該凹部１８にストレインゲージ１９を貼付け
る。斯かる形状とした場合も、前記実施例と同様
軸受３の外輪４からのスラスト荷重は荷重Ｐとし
てリング状部材２０の球面部２１に掛かり、受感
部に剪断歪が生じるため、これがストレインゲー
ジ１９により検出される。 Figures 6 and 7 show other examples of the load transducer used in the present invention, in which the unit cell is formed into an independent block shape and fitted into a hole provided in a ring-shaped holder. On the other hand, in this example, the unit cell forming the sensing section and the holder are integrally formed to detect shear strain. That is, the ring-shaped member 20
The spherical portions 21 protruding in the axial direction are fixed at required intervals in the circumferential direction at the required positions of the ring-shaped member 2.
A gap 22 is provided on the opposite spherical surface part side of 0, a recessed part 18 is provided on the inner and outer circumferential surfaces of the ring-shaped member 20 near the spherical part 21, and a strain gauge 19 is attached to the recessed part 18. Even in the case of such a shape, the thrust load from the outer ring 4 of the bearing 3 is applied as a load P to the spherical part 21 of the ring-shaped member 20, causing shear strain in the sensing part, so this is a strain gauge. Detected by 19.
第８図〜第１０図は本発明に使用する荷重変換
器の更に他の例を示し、リング状のホルダー１２
に所要の間隔で丸穴２３を穿設し、該丸穴２３
に、頂部が球面状をした圧縮型の小型のロードセ
ル２４をその頂部がホルダー１２の軸線方向へ突
出するよう嵌入せしめる。この例の場合、圧縮歪
を検出するようにしているから、ホルダー１２の
反ロードセル頂部側に隙間を設けて脚部を形成す
る必要はなく、ホルダー１２の荷重支持側の側面
はフラツトに加工する。本例の場合、ロードセル
２４の頂部を軸受３の外輪４の側面に当接させ
る。 8 to 10 show still other examples of the load converter used in the present invention, in which a ring-shaped holder 12
Round holes 23 are drilled at the required intervals, and the round holes 23 are
A small compression type load cell 24 having a spherical top is fitted into the holder 12 so that its top protrudes in the axial direction. In this example, since compressive strain is detected, there is no need to provide a gap on the top side of the holder 12 opposite to the load cell to form a leg, and the side surface of the holder 12 on the load supporting side is processed to be flat. . In this example, the top of the load cell 24 is brought into contact with the side surface of the outer ring 4 of the bearing 3.
第１１図〜第１３図は本発明に使用する荷重変
換器の更に又他の例であり、リング状部材２０の
一側面に、円周方向に対し所要の間隔で軸受３か
ら荷重Ｐを受ける突起２５を一体的に固着し、リ
ング状部材２０の他側面に、突起２５に作用した
荷重を第１図に示すナツト１５に伝える突起２６
を１個の突起２５に対して夫々２個所ずつ固着
し、而して受感部たる両端支持の中心荷重梁を形
成させ、リング状部材２０の突起２６，２６間
に、突起２５に掛かる荷重の作用線上に位置する
よう曲げ歪を検出するためのストレインゲージ１
９を貼付ける。斯かる構成としても前記実施例と
同様、軸受に掛かるスラスト荷重の正確な測定が
可能である。 11 to 13 show still another example of a load converter used in the present invention, in which a load P is applied to one side of a ring-shaped member 20 from a bearing 3 at a required interval in the circumferential direction. A projection 26 is integrally fixed to the projection 25 and is provided on the other side of the ring-shaped member 20 to transmit the load acting on the projection 25 to the nut 15 shown in FIG.
are fixed to each protrusion 25 at two locations, thereby forming a central load beam supported at both ends serving as a sensing part, and the load applied to the protrusion 25 is fixed between the protrusions 26 and 26 of the ring-shaped member 20. Strain gauge 1 for detecting bending strain located on the line of action of
Paste 9. Even with such a configuration, it is possible to accurately measure the thrust load applied to the bearing, as in the embodiment described above.
なお、本発明においては荷重変換器を何個にし
ても実施可能であるが、３個以上とするのが正確
な測定のためには好ましいこと、その他、本発明
の要旨を逸脱しない範囲内で種々変更を加え得る
こと、等は勿論である。 Although the present invention can be implemented with any number of load transducers, it is preferable to use three or more for accurate measurement, and other considerations may be made without departing from the gist of the present invention. Of course, various changes may be made.
本発明の軸受のスラスト荷重測定装置によれ
ば、回転機械の軸受に掛かるスラスト荷重を正確
に実測することが可能となるから、軸受部の荷重
負荷状態及び外力を確認でき、構造設計の段階に
おいて軸受部やその周辺に対する信頼性の高い設
計が可能となる、等種々の優れた効果を奏し得
る。 According to the bearing thrust load measuring device of the present invention, it is possible to accurately measure the thrust load applied to the bearing of a rotating machine, so the load state and external force on the bearing can be confirmed, and the Various excellent effects can be achieved, such as making it possible to design the bearing portion and its surroundings with high reliability.
第１図は本発明の軸受のスラスト荷重測定装置
の説明図、第２図〜第４図は第１図の装置に使用
する荷重変換器の部分の一例の詳細図で、第２図
は一部破断の説明図、第３図は第２図の−方
向矢視図、第４図は第２図の−方向矢視図、
第５図は第１図の装置でスラスト荷重を実測する
場合の原理の説明図、第６図及び第７図は本発明
に使用する荷重変換器の他の例の説明図で、第６
図は説明用斜視図、第７図は第６図の部詳細
図、第８図〜第１０図は本発明に使用する荷重変
換器の更に他の例の説明図で、第８図は説明用斜
視図、第９図は第８図の部の説明用平面図、第
１０図は第９図の−方向矢視図、第１１図乃
至第１３図は本発明に使用する荷重変換器の更に
又他の例の説明図で、第１１図は説明用斜視図、
第１２図は第１１図のXII部の平面図、第１３図は
第１２図の−方向矢視図を示す。
図中２は軸受ハウジング、３は軸受、４は外
輪、５は内輪、６は回転軸、１１はダミセール、
１２はホルダー、１２ａは側板、１４はユニツト
セル、１６はユニツトセル本体、１７は脚部、１
８は凹部、１９はストレインゲージ、２０はリン
グ状部材、２１は球面部、２４はロードセル、２
５，２６は突起を示す。
Fig. 1 is an explanatory diagram of the bearing thrust load measuring device of the present invention, Figs. 2 to 4 are detailed views of an example of the load converter portion used in the device of Fig. 1, and Fig. 2 is a An explanatory diagram of the partial breakage, FIG. 3 is a view taken in the - direction arrow of FIG. 2, FIG. 4 is a view taken in the - direction arrow of FIG. 2,
FIG. 5 is an explanatory diagram of the principle when thrust loads are actually measured using the apparatus shown in FIG. 1, and FIGS.
7 is a detailed view of the part shown in FIG. 6, FIGS. 8 to 10 are explanatory views of still other examples of the load converter used in the present invention, and FIG. 8 is an explanatory view. 9 is an explanatory plan view of the part shown in FIG. 8, FIG. 10 is a view taken in the - direction arrow of FIG. 9, and FIGS. 11 to 13 are views of the load converter used in the present invention. Furthermore, FIG. 11 is an explanatory perspective view of another example;
FIG. 12 is a plan view of section XII in FIG. 11, and FIG. 13 is a view taken along the - direction arrow in FIG. 12. In the figure, 2 is a bearing housing, 3 is a bearing, 4 is an outer ring, 5 is an inner ring, 6 is a rotating shaft, 11 is a dummy sale,
12 is a holder, 12a is a side plate, 14 is a unit cell, 16 is a unit cell body, 17 is a leg part, 1
8 is a recessed part, 19 is a strain gauge, 20 is a ring-shaped member, 21 is a spherical part, 24 is a load cell, 2
5 and 26 indicate protrusions.
Claims (1)
グに遊合せしめ、軸受の一側面に、所要数の受感
部を有する荷重変換器を配設して該荷重変換器の
受感部を軸受外輪の一側面に当接せしめ、前記軸
受の他側面に、全体のばね常数が前記荷重変換器
受感部全体のばね常数と略等しくなるようにした
所要数のダミー部材を配設して該ダミー部材を軸
受外輪の他側面に当接せしめ、前記荷重変換器の
受感部及びダミー部材に所要の初期締付力を与え
る装置を所要位置に設けたことを特徴とする軸受
のスラスト荷重測定装置。1. The outer ring of the bearing that supports the rotating shaft is loosely fitted to the bearing housing, and a load converter having the required number of sensing parts is disposed on one side of the bearing, and the sensing part of the load converter is connected to the outer ring of the bearing. A required number of dummy members are disposed in contact with one side of the bearing and on the other side of the bearing so that the overall spring constant is approximately equal to the spring constant of the entire load transducer sensing part. A thrust load measuring device for a bearing, characterized in that a device is provided at a predetermined position to bring a member into contact with the other side of the bearing outer ring and apply a required initial tightening force to the sensing portion of the load converter and the dummy member. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58037890A JPS59163531A (en) | 1983-03-08 | 1983-03-08 | Thrust load measuring device of bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58037890A JPS59163531A (en) | 1983-03-08 | 1983-03-08 | Thrust load measuring device of bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59163531A JPS59163531A (en) | 1984-09-14 |
| JPH0314129B2 true JPH0314129B2 (en) | 1991-02-26 |
Family
ID=12510128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58037890A Granted JPS59163531A (en) | 1983-03-08 | 1983-03-08 | Thrust load measuring device of bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59163531A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012088091A (en) * | 2010-10-15 | 2012-05-10 | Nitto Seiko Co Ltd | Washer type load cell and thrust load detecting mechanism |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0615996B2 (en) * | 1985-06-04 | 1994-03-02 | 三菱電機株式会社 | Thrust load detection device for rotating electric machine |
| JPS6222039A (en) * | 1985-07-22 | 1987-01-30 | Mitsubishi Electric Corp | Detection device for thrust load on rotating machine |
| JP2574837Y2 (en) * | 1990-11-22 | 1998-06-18 | 株式会社水木精密 | Guide roller for magnetic tape |
| JP4925624B2 (en) * | 2005-08-23 | 2012-05-09 | Ｎｔｎ株式会社 | Wheel bearing with sensor |
| WO2007018072A1 (en) | 2005-08-08 | 2007-02-15 | Ntn Corporation | Sensor-equipped bearing for wheel |
| JP5004535B2 (en) * | 2005-08-25 | 2012-08-22 | Ｎｔｎ株式会社 | Turbine unit for air cycle refrigeration cooling |
| KR101286626B1 (en) | 2005-08-25 | 2013-07-15 | 엔티엔 가부시키가이샤 | Turbine unit for refrigerating/cooling air cycle |
| US7430926B2 (en) | 2006-02-13 | 2008-10-07 | General Electric Company | Apparatus for measuring bearing thrust load |
| DE102007012586B3 (en) * | 2007-03-13 | 2008-03-27 | Sirona Dental Systems Gmbh | Dental treatment machine, has bearing housing adapted to receive tool spindle, and force sensor that detects operating force between tool spindle and bearing housing, where sensor has sensor unit in form of measuring bridge or piezo unit |
| WO2009016820A1 (en) | 2007-07-31 | 2009-02-05 | Ntn Corporation | Sensor-equipped bearing for wheel |
| JP5019988B2 (en) | 2007-07-31 | 2012-09-05 | Ｎｔｎ株式会社 | Wheel bearing with sensor |
| US8314925B2 (en) | 2009-10-30 | 2012-11-20 | General Electric Company | Fiber-optic based thrust load measurement system |
| JP5715342B2 (en) * | 2010-01-21 | 2015-05-07 | 日東精工株式会社 | Thrust load detection mechanism |
| JP5540390B2 (en) * | 2012-11-01 | 2014-07-02 | 株式会社タニタ | Load cell strain body, load cell and weight measuring device using the load cell strain body, and method for producing the load cell strain body |
| JP6256168B2 (en) * | 2014-04-14 | 2018-01-10 | 日本精工株式会社 | Bearing device with load sensor |
| JP2018004290A (en) * | 2016-06-28 | 2018-01-11 | 株式会社Ihi | Thrust load measurement device |
| JP2019086335A (en) * | 2017-11-02 | 2019-06-06 | Ｋｙｂ株式会社 | Load detector |
| JP7052674B2 (en) * | 2017-11-09 | 2022-04-12 | 日本製鉄株式会社 | Load measurement unit and load measurement method |
-
1983
- 1983-03-08 JP JP58037890A patent/JPS59163531A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012088091A (en) * | 2010-10-15 | 2012-05-10 | Nitto Seiko Co Ltd | Washer type load cell and thrust load detecting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59163531A (en) | 1984-09-14 |
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