WO2009153881A1 - Procédé et dispositif de mesure de contrainte dans une partie de vissage de boulon - Google Patents

Procédé et dispositif de mesure de contrainte dans une partie de vissage de boulon Download PDF

Info

Publication number
WO2009153881A1
WO2009153881A1 PCT/JP2008/061321 JP2008061321W WO2009153881A1 WO 2009153881 A1 WO2009153881 A1 WO 2009153881A1 JP 2008061321 W JP2008061321 W JP 2008061321W WO 2009153881 A1 WO2009153881 A1 WO 2009153881A1
Authority
WO
WIPO (PCT)
Prior art keywords
bolt
receiving body
strain sensor
diameter
pressure receiving
Prior art date
Application number
PCT/JP2008/061321
Other languages
English (en)
Japanese (ja)
Inventor
久 江浪
雄司 境脇
進 渡辺
修一 野口
Original Assignee
日本原子力発電株式会社
原電事業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日本原子力発電株式会社, 原電事業株式会社 filed Critical 日本原子力発電株式会社
Priority to PCT/JP2008/061321 priority Critical patent/WO2009153881A1/fr
Priority to JP2009514292A priority patent/JP4323568B1/ja
Publication of WO2009153881A1 publication Critical patent/WO2009153881A1/fr

Links

Images

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
    • G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed

Definitions

  • the present invention relates to a method and an apparatus for measuring a stress of a bolt screw part.
  • Fastening means using bolts are widely used in many fields such as bridges, steel towers, buildings, and large and small machinery products, and in any case, for any cause, It is necessary that the bolts do not loosen or fall off.
  • a display means that the bolt tightening torque is displayed above a certain level, or a strain sensor is embedded inside the bolt to directly display the internal stress when tightening the bolt.
  • a strain sensor is embedded inside the bolt to directly display the internal stress when tightening the bolt.
  • the present invention displays the stress of the bolt screw part easily and with high accuracy with a simple structure without performing special processing on the bolt. It is an object of the present invention to provide a method and apparatus that can be measured.
  • the above problem is solved as follows.
  • the male threaded portion provided at the tip of the shaft portion of the bolt is screwed into the female threaded hole provided in the support, and the base end portion of the shaft portion of the bolt is engaged. Tighten the bolt with a thrust rolling bearing and a pressure receiving body with a strain sensor attached to the back of the diameter-enlarging flange in contact with the thrust rolling bearing between the enlarged-diameter head provided and the support. Then, based on the strain of the diameter-enlarged flange of the pressure receiving body detected by the strain sensor at that time, the internal stress of the threaded portion of the bolt is measured.
  • the bolt is tightened with the load cell sandwiched between the support and the pressure receiving body, and the detected value of the strain sensor at that time is compared with the detected value of the load cell.
  • a taper portion that gradually decreases in diameter in a direction away from the thrust rolling bearing is provided at the central portion of the diameter-enlarging flange of the pressure receiving body.
  • a strain sensor is attached to the outer peripheral surface, and the inner surface of the tapered portion is ground to obtain a desired thickness of the tapered portion.
  • the detection sensitivity by the strain sensor can be changed to a desired value by setting the thickness of the tapered portion to a desired value. That is, the detection sensitivity by the strain sensor can be increased by reducing the thickness of the tapered portion.
  • the shim having a different outer diameter is interposed between the thrust rolling bearing and the diameter-enlarging flange of the pressure-receiving body, thereby increasing the diameter-enlarging flange of the pressure-receiving body.
  • the pressure receiving range is changed, and the detection sensitivity of the strain sensor is changed.
  • the detection sensitivity by a distortion sensor can be changed easily only by exchanging shims. That is, by increasing the outer diameter of the shim to be interposed, the bending moment of the diameter-enlarged flange of the pressure receiving body when tightening the bolt is increased, and the detection sensitivity by the strain sensor can be increased.
  • a male screw portion provided at the tip end portion of the shaft portion having a diameter-expanded head portion at the base end portion of the shaft portion is screwed into a female screw hole provided in the support body.
  • a thrust rolling bearing fitted on the shaft of the bolt, and between the thrust rolling bearing and the support body, and between the thrust rolling bearing and the support body.
  • a pressure receiving body having a strain sensor attached to a back surface of a diameter-enlarged flange that is fitted to the shaft portion and is in contact with the thrust rolling bearing; and the strain sensor that is connected to the strain sensor and tightens the bolt.
  • Signal processing means for processing the detection output is provided.
  • a taper portion that gradually decreases in the direction away from the thrust rolling bearing is provided at the center of the diameter-enlarging flange of the pressure receiving body, and a strain sensor is provided on the outer peripheral surface of the taper portion. Adhere.
  • a load cell is interposed between the support and the pressure receiving body.
  • the detection sensitivity of the strain sensor can be easily changed by simply replacing the shim with one having a different outer diameter, as in the fifth aspect of the invention.
  • a method and an apparatus capable of displaying or measuring a stress of a bolt screw part easily and with high accuracy with a simple structure without performing special processing on the bolt. Can do.
  • FIG. 1 shows a first embodiment of the device of the present invention.
  • Reference numeral 1 denotes a support body provided with a female screw hole 2
  • 3 denotes a body to be fastened to the support body 1 with bolts 4.
  • the support body 1 includes, for example, a case main body and a pedestal of a mechanical device, and any other body to which the tightened body 3 is fastened and fixed with a bolt 4.
  • the to-be-tightened body 3 includes, for example, a lid body fastened to a case main body of a mechanical device as the support body 1, and other things to be fastened to the support body 1 with bolts 4.
  • the tightened body 3 is provided with a bolt insertion hole 5 into which the shaft portion 4a of the bolt 4 can be fitted.
  • the bolt 4 has a diameter-enlarged head portion 4b at the base end portion of the shaft portion 4a, and the tip portion of the shaft portion 4a is a male screw portion 4c that can be screwed into the female screw hole 2 of the support 1.
  • the diameter-enlarging flange 6b is provided, and a rising edge 6d facing the proximal end is provided on the periphery of the diameter-enlarging flange 6b.
  • the tapered portion 6c is gradually enlarged in the proximal direction with an inclination angle of about 45 degrees from the cylindrical portion 6a.
  • a plurality of plate-like strain sensors 7 are attached to the outer peripheral surface of the tapered portion 6c of the pressure receiving body 6 at equal intervals in the circumferential direction.
  • Each strain sensor 7 detects a minute strain of the tapered portion 6c of the pressure receiving body 6 as an electric signal, and a known strain gauge can be used.
  • Each strain sensor 7 is connected to a signal processing device 9 via a lead wire 8.
  • the signal processing device 9 amplifies or A / D-converts an electrical signal that is an output signal from each strain sensor 7 and converts it into a signal that can be easily processed by the personal computer or other information processing device 10. .
  • the information processing device 10 Based on the input signal from the signal processing device 9, the information processing device 10 displays the distortion of the tapered portion 6c of the pressure receiving body 6 detected by each strain sensor 7 on the display device 10a or in a memory (not shown). It has a function to record.
  • the thrust rolling bearing 11 is a thrust rolling bearing fitted to the shaft portion 4a of the bolt 4, and is preferably a ball bearing or a roller bearing.
  • the outer diameter of the thrust rolling bearing 11 can be fitted into the rising edge 6 d of the pressure receiving body 6.
  • the to-be-tightened body 3 when measuring the stress of the bolt screw part itself, the to-be-tightened body 3 may be removed. Further, when the thickness of the tightened body 3 is close to the sum of the thickness of the thrust rolling bearing 11 and the thickness of the pressure receiving body 6, the bolt 4 that has been fastened until then is once removed from the support body 1, The to-be-tightened body 3 is removed from the shaft portion of the bolt, and the bolt 4 is again screwed into the female screw hole 2 of the support body 1 with the thrust rolling bearing 11 and the pressure receiving body 6 fitted to the shaft portion. You may make it do.
  • the distortion of the taper portion 6c of the pressure receiving body 6 measured at this time corresponds to the internal stress of the threaded portion between the male threaded portion 4c of the bolt 4 and the female threaded hole 2 of the support 1, the inside of the threaded portion. Know the magnitude of the stress.
  • the thrust rolling bearing 11 is interposed between the diameter-enlarged head 4b of the bolt 4 and the pressure receiving body 6, and the bolt 4 is tightened, so that the torque of the bolt 4 is prevented from acting on the pressure receiving body 6. Therefore, the accuracy of the strain sensor 7 can be increased.
  • the relationship between the tightening torque and the bolt screw portion stress For example, when the bolt 4 is tightened with a required torque and the stress of the bolt threaded portion does not reach a predetermined value, for example, deformation of the female screw hole 2 of the support 1, It is possible to know that there is some abnormality such as contamination.
  • the state of the bolt tightening portion can be monitored over time. If the bolt 4 is loosened or dropped out, it can be immediately known. it can.
  • the inner surface of the tapered portion 6c of the pressure receiving body 6 shown in FIG. 1 is ground in advance before the pressure receiving body 6 is fitted to the shaft portion 4a of the bolt 4, as shown in FIG.
  • the thickness of the tapered portion 6c is reduced.
  • the taper portion 6c is easily elastically bent when the bolt 4 is tightened, and the detection sensitivity of the strain sensor 7 can be increased.
  • the second method is such that shims 12 and 13 having different outer diameters are interposed between the thrust rolling bearing 11 and the diameter-enlarging flange 6 b of the pressure receiving body 6.
  • This is a method of changing the detection sensitivity of the strain sensor 7 by changing the pressure receiving range in the enlarged diameter flange 6b.
  • the detection sensitivity of the strain sensor 7 can be easily changed by simply replacing the shims 12 and 13.
  • a method for inspecting whether or not the strain sensor 7 is operating normally will be described.
  • a load cell 14 is sandwiched between the support 1 and the pressure receiving body 6, the load cell 14 and the signal processing device 9 are connected with a lead wire 15, and the bolt 4 is attached in this state.
  • the detected value of the strain sensor 7 at that time and the detected value of the load cell 14 are compared.
  • the to-be-tightened body 3 may be interposed between the support body 1 and the load cell 14.
  • the strain sensor 7 When the detection value of the strain sensor 7 and the detection value of the load cell 14 are always the same, or when the increase / decrease ratio is the same, the strain sensor 7 is operating normally and the detection accuracy is maintained. If there is a difference between them, know that there is an abnormality in the strain sensor 7, or the pressure receiving body 6 to which it is attached, or the entire device. Can do.
  • strain sensor 7 can also be referred to as a strain sensor 7 and an inspection apparatus for the entire apparatus.
  • the stress of the bolt threaded portion of the present invention can be easily and easily made with a simple structure without applying special processing to the bolt. It can be measured with high accuracy.
  • this invention is not limited only to the said embodiment, The implementation in many modified aspects is possible.
  • a strain sensor is attached to the outer peripheral surface of the shaft portion 4 a of the bolt 4, and the enlarged diameter head portion 4 b of the bolt 4 is rotated with a torque wrench, and the torque generated in the shaft portion 4 a of the bolt 4 at that time And the stress of the bolt screw portion detected by the strain sensor 7 (and the load cell 14) may be measured.
  • the inclination angle of the outer peripheral surface of the tapered portion 6c of the pressure receiving body 6 is not limited to 45 degrees, and can be, for example, 60 degrees or another angle with respect to the central axis. Further, a stud bolt and a nut can be used instead of the bolt 4.
  • the present invention can be applied to anything that fastens a member to be fastened to a support with a bolt.
  • the durability can be confirmed by monitoring the detection value of the strain sensor provided in this part over a long period of time. It is possible to detect abnormalities such as fluctuations in the stress of the threaded portion and broken bolts based on the fluctuation.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

L'invention porte sur un procédé et sur un dispositif pour mesurer facilement et avec une précision élevée une contrainte dans une partie de vissage de boulon, avec une structure simple et sans effectuer de travail spécial sur un boulon. Une partie de vis externe (4c) disposée au sommet d'une partie d'axe (4a) d'un boulon (4) est vissée dans un trou de vis femelle (2) installé dans un corps de support (1). Un palier à butée (11) et un corps de réception de pression (6) dans lequel un capteur de déformation (7) est collé sur une face arrière d'une bride d'expansion de diamètre (6b) en butée sur le palier à butée (11), sont insérés entre une tête d'expansion de diamètre (4b) disposée sur une partie d'extrémité de base de la partie d'axe (4a) dans le boulon (4) et le corps de support (1), et le boulon (4) est fixé. Une contrainte interne de la partie de vissage du boulon (4) est mesurée en fonction de la déformation de la bride d'expansion de diamètre (6b) du corps de réception de pression (6), que détecte le capteur de déformation (7).
PCT/JP2008/061321 2008-06-20 2008-06-20 Procédé et dispositif de mesure de contrainte dans une partie de vissage de boulon WO2009153881A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2008/061321 WO2009153881A1 (fr) 2008-06-20 2008-06-20 Procédé et dispositif de mesure de contrainte dans une partie de vissage de boulon
JP2009514292A JP4323568B1 (ja) 2008-06-20 2008-06-20 ボルト螺合部の応力測定方法および装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2008/061321 WO2009153881A1 (fr) 2008-06-20 2008-06-20 Procédé et dispositif de mesure de contrainte dans une partie de vissage de boulon

Publications (1)

Publication Number Publication Date
WO2009153881A1 true WO2009153881A1 (fr) 2009-12-23

Family

ID=41149058

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/061321 WO2009153881A1 (fr) 2008-06-20 2008-06-20 Procédé et dispositif de mesure de contrainte dans une partie de vissage de boulon

Country Status (2)

Country Link
JP (1) JP4323568B1 (fr)
WO (1) WO2009153881A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011149812A (ja) * 2010-01-21 2011-08-04 Nitto Seiko Co Ltd ワッシャ型ロードセルおよびスラスト荷重検出機構
JP2012021865A (ja) * 2010-07-14 2012-02-02 Tokyo Electric Power Co Inc:The 応力解放法による鉄塔部材の応力測定方法及びその装置
CN102466531A (zh) * 2010-11-10 2012-05-23 三一电气有限责任公司 一种螺栓故障监测系统和监测方法
JP2017211376A (ja) * 2016-05-23 2017-11-30 ミネベア インテック アーヘン ゲーエムベーハー ウント ツェーオー カーゲー 地震が起きやすい地域におけるボルトセンサの長期ドリフトおよびクリープ現象を補正する方法
CN116929624A (zh) * 2023-09-19 2023-10-24 广州市市政工程试验检测有限公司 一种螺栓轴力监测装置、方法、设备及介质

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015131364A (ja) * 2014-01-10 2015-07-23 三菱重工業株式会社 ボルト軸力試験装置およびボルト軸力試験方法
CN106323523B (zh) * 2016-08-17 2018-12-28 斯加特流体控制设备（成都）有限公司 用于测试角行程类气动液动执行器扭矩的扭矩测试装置
CN106197820A (zh) * 2016-08-29 2016-12-07 上海百若试验仪器有限公司 一种多功能螺栓紧固系统的集成式压扭复合测量装置
CN106346420B (zh) * 2016-09-14 2018-03-20 北京航空航天大学 一种螺栓精确预紧装置
CN109186822B (zh) * 2018-08-02 2020-08-14 大连理工大学 一种基于fbg传感器的螺栓紧固结合面面压检测方法
CN109186823B (zh) * 2018-08-02 2020-08-14 大连理工大学 基于fbg传感器检测螺栓连接结合面面压的标定方法
CN109612626A (zh) * 2019-01-03 2019-04-12 武汉科技大学 一种螺栓轴向力传感器
CN113479234B (zh) * 2021-08-25 2022-07-22 嘉兴爱的科技有限公司 一种轨道固定组件的健康状态监测装置及系统
CN115452233B (zh) * 2022-08-15 2023-10-24 中机生产力促进中心有限公司 一种螺纹紧固件的预紧力检测装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324878A1 (de) * 1993-07-25 1994-12-08 Berwald Werner Schraubensicherung mit optischer Funktionsanzeige
JP2005297133A (ja) * 2004-04-13 2005-10-27 Isuzu Motors Ltd 締付け工具およびボルト軸力の測定方法
JP2006162394A (ja) * 2004-12-06 2006-06-22 Foa-Saito:Kk 応力測定用ワッシャー

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324878A1 (de) * 1993-07-25 1994-12-08 Berwald Werner Schraubensicherung mit optischer Funktionsanzeige
JP2005297133A (ja) * 2004-04-13 2005-10-27 Isuzu Motors Ltd 締付け工具およびボルト軸力の測定方法
JP2006162394A (ja) * 2004-12-06 2006-06-22 Foa-Saito:Kk 応力測定用ワッシャー

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011149812A (ja) * 2010-01-21 2011-08-04 Nitto Seiko Co Ltd ワッシャ型ロードセルおよびスラスト荷重検出機構
JP2012021865A (ja) * 2010-07-14 2012-02-02 Tokyo Electric Power Co Inc:The 応力解放法による鉄塔部材の応力測定方法及びその装置
CN102466531A (zh) * 2010-11-10 2012-05-23 三一电气有限责任公司 一种螺栓故障监测系统和监测方法
JP2017211376A (ja) * 2016-05-23 2017-11-30 ミネベア インテック アーヘン ゲーエムベーハー ウント ツェーオー カーゲー 地震が起きやすい地域におけるボルトセンサの長期ドリフトおよびクリープ現象を補正する方法
JP7002859B2 (ja) 2016-05-23 2022-01-20 ミネベア インテック ゲーエムベーハー 地震が起きやすい地域におけるボルトセンサの長期ドリフトおよびクリープ現象を補正する方法
CN116929624A (zh) * 2023-09-19 2023-10-24 广州市市政工程试验检测有限公司 一种螺栓轴力监测装置、方法、设备及介质
CN116929624B (zh) * 2023-09-19 2024-01-19 广州市市政工程试验检测有限公司 一种螺栓轴力监测装置、方法、设备及介质

Also Published As

Publication number Publication date
JPWO2009153881A1 (ja) 2011-11-24
JP4323568B1 (ja) 2009-09-02

Similar Documents

Publication Publication Date Title
JP4323568B1 (ja) ボルト螺合部の応力測定方法および装置
US6204771B1 (en) Load indicating fastener systems method and apparatus
CA2300894C (fr) Procede et dispositif se rapportant a des systemes de fixation indiquant une charge
JP2010117334A (ja) ボルト軸力測定方法およびボルト軸力測定機
US7350420B2 (en) Device for measuring pre-stressing force in a bolt-nut connection
US7520174B2 (en) Method and apparatus for indicating a load
JP2015131364A (ja) ボルト軸力試験装置およびボルト軸力試験方法
US9719900B1 (en) Strain-gauged washer for measuring bolt preload
CN203561472U (zh) 车轮芯轴螺栓预紧力检测装置
CN110658129A (zh) 一种测试螺纹紧固件总摩擦系数的装置
US5668323A (en) Method and apparatus for indicating a load
US20200208672A1 (en) Apparatus and Method to Establish Two Reference Positions Within a Fastener In Order to Allow the Measurement and Monitoring of Fastener Load
CN109029962A (zh) 确定紧固施工方案的试验系统
JP4316283B2 (ja) 緊張材の定着部構造及び緊張材の応力測定方法
JP2005091086A (ja) ボルト軸力検出器、ボルト軸力検出器付きボルト、ボルトおよびボルト締付け管理方法
US20240218899A1 (en) A device and method for determining amount of force application
CN104568281A (zh) 一种车轮芯轴螺栓预紧力检测装置
CN211205608U (zh) 螺栓组件及检测螺栓受力的系统
WO2019232675A1 (fr) Ensemble boulon à vis pour mesurer une précharge et appareil de mesure de précharge de palier
CN114018463B (zh) 一种压载式螺栓轴力标定测量装置及标定方法
WO2022162899A1 (fr) Boulon en u, procédé de construction et dispositif de mesure
JPH04124437U (ja) 軸受の締付力計測装置
JP2024009615A (ja) 緩みセンサ付きボルトとその使用方法並びに緩み検出システム
CA2325557A1 (fr) Appareil et procede de fixation d'un indicateur de charge a un element de boulonnerie
CN105953767A (zh) 螺栓群应力测试方法、螺栓应力测试装置及连接装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2009514292

Country of ref document: JP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08777465

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08777465

Country of ref document: EP

Kind code of ref document: A1