WO2013114190A1 - Dispositif de détermination de contraintes exercées sur une structure de support - Google Patents

Dispositif de détermination de contraintes exercées sur une structure de support Download PDF

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Publication number
WO2013114190A1
WO2013114190A1 PCT/IB2013/000130 IB2013000130W WO2013114190A1 WO 2013114190 A1 WO2013114190 A1 WO 2013114190A1 IB 2013000130 W IB2013000130 W IB 2013000130W WO 2013114190 A1 WO2013114190 A1 WO 2013114190A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamping ring
measuring head
power transmission
force
transmission surface
Prior art date
Application number
PCT/IB2013/000130
Other languages
German (de)
English (en)
Inventor
Benedikt HERING
Original Assignee
Schenck Process Gmbh
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 Schenck Process Gmbh filed Critical Schenck Process Gmbh
Publication of WO2013114190A1 publication Critical patent/WO2013114190A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01L1/2231—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being disc- or ring-shaped, adapted for measuring a force along a single direction
    • 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
    • G01L5/0004—Force transducers adapted for mounting in a bore of the force receiving structure
    • 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
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/045—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands for measuring the tension across the width of a band-shaped flexible member

Definitions

  • the invention relates to a device for detecting force loads of a support structure according to the preamble of patent claim 1.
  • Force sensors are called. Force measuring sensors find particular application in the gravimetric detection of levels in containers, which by
  • Supported structures are supported, such as silos, as well as in the monitoring of limit load values of force-loaded support structures, such as cranes or similar support or support structures, and weighing tasks in the track area and switches in the
  • the invention is therefore based on force sensors, which are used to detect forces on forces
  • Support structures are suitable, for which purpose usually in the support structures prevailing normal and transverse forces are to be determined.
  • Support walls or the like to understand, which may be interconnected and / or pre-assembled.
  • Support structure can be used.
  • force sensors to support structures for detecting forces can be used to detect force-dependent deformations on the surface of the
  • Force transducers are suitably secured by welding or screw connections or by other types of connection to the surface. Furthermore, such an attachment of load cells naturally allows only a limited detection of the forces on the forces
  • cylindrical measuring head are commonly called
  • Measuring eyes usually designate and have one
  • Traction sensors designed as measuring eyes can be used wherever either an existing support structure can not or should not be changed or, if the requirement exists, a cost-effective one
  • Force transducer in a support structure for the purpose of measuring the force load of the support structure is usually first drilled a hole in the support structure and this hole worked out as a fit. Subsequently, the
  • a measuring device in which a measuring spindle, on the surface thereof Strain gages in the longitudinal direction of the spindle
  • Device either devices or support structures in a simple and inexpensive manner to a force measuring device and / or
  • the object of the invention is achieved by a device for detecting force loads of a
  • Support structure comprising a force transducer with a substantially cylindrical measuring head to be arranged or arranged in a bore of the support structure, wherein the measuring head has a base and a
  • Clamping ring system has adapted outer surface, and for the radial fixing of the measuring head against a
  • Actuation of the first clamping ring is provided substantially in the axial direction of the cylindrical measuring head (5). This is inventively provided that the
  • Measuring head has a disc-shaped deformation body, which is arranged parallel to the base and on the
  • At least one strain gauge is applied.
  • first clamping ring is at least partially in an annular gap between the outer surface of the cylindrical measuring head and the inner surface of the bore in the
  • the deformation body with the strain gauge and the clamping ring are in a single force level. This runs radially to the measuring head.
  • the inventive arrangement ensures that the forces to be detected can be introduced from the support structure exactly in the deformation body.
  • Strains and deformations of a support structure can be precisely transferred to the measuring eye and the measuring eye on / in the support structure fixed as well as again detachable, that is mounted dismantled or introduced.
  • Cross-sectional profile of the existing support structure and / or can be detected in the neutral phase of the support structure.
  • Force sensor so suitable to introduce into the support structure that these forces in a measuring direction can detect much more accurate and further insensitive with respect to disturbing, possibly further, forces and moments in the support structure.
  • Carriers which are not previously worked out as a fit or must be worked out.
  • the device according to the invention can be any device according to the invention.
  • the force application means in the manner of a sleeve with an internal thread, and in particular with a bore, be designed, wherein this internal thread engages in an attached to the measuring head external thread.
  • the diameter of the external thread may be smaller than the diameter along the outer surface of the cylindrical measuring head which is adapted as a clamping ring system.
  • Kraftbeierschlagungsmittel have an annular end face and the inner diameter of the Kraftbeierschlagungsschs be greater than the outer diameter of the measuring head at least in some areas.
  • the wall thickness of the force-applying means at its end face smaller than the gap width of the
  • the force transducer can also be passed as a structural unit through the bore of the support structure, the
  • Clamping ring is already arranged on the measuring head and can be moved and secured by pressing the Kraftbeierschlagungsffens in a fixed position.
  • Transition region to the end face a recess open to the measuring head, and / or attached to the measuring head in a transition region to the outer surface adapted as a clamping ring system a recess open towards the force application means.
  • the first clamping ring has a tapered outer force transmission surface, and at least part of the inner surface of the bore in the support structure is to this tapered outer force transmission surface of the first
  • the clamping ring is to be arranged in the annular gap or is arranged there such that the conical outer force transmission surface of the first Clamping ring at least partially rests against the conical inner surface of the bore.
  • the first clamping ring has a conical inner
  • Power transmission surface and adapted as a clamping ring system outer surface is complementary to this conical inner power transmission surface of the first clamping ring extending tapered power transmission surface.
  • the first clamping ring is in the
  • Power transmission surface of the outer surface is applied.
  • the device according to the invention comprises a second clamping ring, wherein the first clamping ring has at least a first conical force transmission surface, and the second clamping ring has at least one conical force transmission surface complementary to this conical force transmission surface of the first clamping ring.
  • the first and the second clamping ring are to be arranged in such an embodiment in the annular gap or are there
  • a connecting means for example a Gland, includes, which connects the first and second clamping ring together and in the
  • Connecting means connects the first or the second clamping ring with the cylindrical measuring head and in the
  • Device may be at least one Kraftbeierschlagungsstoff comprises, which causes at least on the first or second clamping ring a force substantially in the axial direction of the cylindrical measuring head, so that the first and / or second clamping ring is clamped in the annular gap and consequently a strain of the cylindrical measuring head in the Annular gap is effected.
  • the first and the second clamping ring an end-side power transmission surface, and adapted as a clamping ring outer surface of the cylindrical measuring head at least partially encircling stage with a substantially radially aligned
  • Fig. 1 a side view of a mounting situation of the device according to the invention with three vertically
  • Fig. 2 a side view of a mounting situation of the device according to the invention with a horizontal
  • FIG. 3 is a perspective view of a mounting situation of the device according to the invention in one
  • shear force loaded support structure in the form of a rail.
  • FIG. 5 detail V of Figure 4 in an enlarged view.
  • the measuring head for this purpose as Clamping ring system has adapted outer surface
  • At least one first clamping ring is included with at least one tapered force transmitting surface, wherein the first clamping ring at least partially in an annular gap between the outer surface of the cylindrical measuring head and an inner surface of the bore in the support structure
  • FIG. 1 shows an exemplary support structure 4 of a possible application of cylindrical measuring heads of the device according to the invention.
  • three vertically arranged supports 4 are shown, which carry a silo 14.
  • Each of the supports can form a support structure 4, on which a device according to the invention is to be arranged or arranged.
  • Fig. 1 the device according to the invention is neither applied nor shown. In this respect, Fig. 1 is merely illustrative of a preferred arrangement of the device according to the invention.
  • the three support structures 4 designed as supports are fastened at their one end in a bearing 16.
  • these supports carry the silo 14, which has an outlet opening 15.
  • Siloinhaltes attachment of the device according to the invention is advantageously carried out on one or more of the supporting structures formed as a support 4 by at least one substantially cylindrical measuring head 5 of a
  • Force measuring transducer 3 of the device according to the invention (each not shown in Fig. 1) in one of the holes 6 of the support structures formed as a support 4 is introduced and is non-positively connected to one of the support structures 4.
  • the weight of the silo content is increased by one of the supports 4 formed as supports on the in one of the holes. 6
  • Siloinhaltes dependent measurement of a normal force can be done in one of the trained as a support
  • Support structures 4 acts.
  • Fig. 2 shows an exemplary support structure 4, another possible application of cylindrical
  • Measuring heads of the device according to the invention a horizontally arranged carrier is shown, which carries a silo 14.
  • the carrier may form a support structure 4, on which to arrange a measuring head or
  • Fig. 2 the device according to the invention, as in the installation situation according to in Fig. 1, neither applied nor shown. In this respect, Fig. 2 also serves only for exemplary explanation of a preferred arrangement of the device according to the invention.
  • the carrier structure designed as a support is supported at both ends on two bearings 16.
  • the silo 14 in turn has an outlet opening 15.
  • the attachment of a device according to the invention to a silo supported by the support structure 4 can, in particular, be retrofitted, realized
  • gravimetric level measurement also serves to realize a weighing device for detecting the content weight of the silo 14.
  • the device according to the invention is attached to the supporting structures 4 in the form of a carrier, by a substantially cylindrical measuring head 5 of a
  • Support structure 4 is introduced and is non-positively connected to the support structure 4.
  • the weight of the silane content is formed by the carrier
  • Siloinhaltes dependent measurement of a transverse force can take place, which acts in the support structure formed as a carrier 4.
  • Support structure and inner structure of the measuring head also the simultaneous measurement of a lateral force and a normal force can take place.
  • Fig. 3 shows a perspective view of a
  • the force transducer 3 of a device according to the invention is installed in the web of a provided as a support structure 4 rail.
  • FIG. 4 shows a section through the support structure 4 from FIG. 3 along the section line IV-IV.
  • the inventive device with a force transducer 3 and the
  • associated measuring head 5 is arranged in the designated hole 6 of the support structure 4. This is so defined in the support structure 4, that the central axis of the support structure, a clamping ring 1, a deformation body 7 of the measuring head 5 and the applied thereon strain gauges (not shown) lie in a plane, namely the force plane.
  • Fig. 5 shows detail 5 of FIG. 4 in enlarged
  • FIG. 1 Shown is a cross section through a preferred device according to the invention for detecting forces loads of a support structure 4, comprising a force transducer 3 with a substantially
  • cylindrical measuring head 5 which is to be arranged or arranged in a bore 6 of the support structure 4, which is introduced into a support structure 4, in particular according to one of the installation situations of Fig. 1, 2, 3 or 4.
  • the force transducer 3 has according to the preferred
  • Embodiment of Fig. 5 in an expedient manner on a Deformation body 17 at least one
  • Detecting deformation body 17 which is proportional to a force acting on the deformation body 17 force.
  • the disc-shaped deformation body 17 is visible in Figure 5 only as a web which is clamped by the jacket of the measuring head 5.
  • the jacket of the measuring head 5 and the deformation body 17 complement each other in cross section to an I or double T-profile.
  • the measuring head 5 shown in FIG. 5 has an outer surface 8 adapted as a clamping ring system.
  • the device according to the invention according to FIG. 5 comprises a first clamping ring 1 with at least one inner conical force transmission surface 1 a, wherein the first one
  • Clamping ring 1 is at least partially disposed in an annular gap 7 between the outer surface 8 of the cylindrical measuring head 5 and an inner surface of the bore 6 in the support structure 4.
  • the device according to the invention according to FIG. 5 comprises a second clamping ring 2 with an outer conical running complementary to the conical inner force transmission surface 1a of the first clamping ring 1
  • the two clamping rings shown in Fig. 5 each have a cylindrical shape, wherein according to the. Invention clamping rings can be used, which are designed only as a cylinder segment.
  • Power transmission surface having first clamping ring 1, wherein at least a part of the inner surface of the bore 6 in the support structure 4 to this conical outer
  • Ring gap 7 may be arranged that the conical outer
  • Power transmission surface of the first clamping ring 1 at least partially rests against the conical inner surface of the bore 6.
  • first clamping ring 1 which has as
  • the conical inner force transmission surface 1a of the first clamping ring 1 bears at least partially against the conical force transmission surface of the outer surface 8.
  • the device according to the invention furthermore comprises at least one force-applying means 9, which has a force on the first clamping ring 1 essentially in FIG
  • Axial direction of the measuring head 5 causes.
  • a force-applying means 9 is included, which on the first clamping ring 1 is a force substantially in
  • Axial direction of the measuring head 5 causes and is designed in the manner of a sleeve with an internal thread 11, while the internal thread 11 engages in an attached to the measuring head 5 external thread 12.
  • the first and the second clamping ring 1, 2 each comprise an end-side power transmission surface 1b, 2b. Furthermore, the outer surface 8, which is adapted as a clamping ring system, has a step 10 which encircles the measuring head 5 and has a radially oriented force transmission surface, on which the frontal force transmission surface 2b of the second
  • Clamping ring 2 is applied, wherein at the front side
  • Threaded sleeve formed Kraftbeaufschlagungsmittels 9 an axial biasing force on the first clamping ring 1 and due to the two complementarily formed contiguous conical force transmission surfaces la, 2a of the two clamping ring 1, 2, a radial force component is effected.
  • Support structure 4 is effected. This pressure leads to such a large frictional engagement between the inner surface of the bore 6 in the support structure and the outer surface 8 adapted as a clamping ring system, so that a frictional connection between the measuring head 5 of the device according to the invention and the support structure 4 is made possible.
  • first and / or the second clamping ring 2 may be formed slotted, so that an improved expansion or shrinkage of the two clamping rings 1, 2 is made possible.
  • Measuring head 5 causes.
  • the first clamping ring 1 expediently at least one outer conical force transmission surface, while the second clamping ring 2 at least one complementary to the conical outer force transmission surface of the first clamping ring 1 inner tapered
  • alternative embodiment of the invention adapted as a clamping ring system outer surface 8 preferably also a measuring head 5 rotating step 10 with a radially oriented force transmission surface on which an end-side power transmission surface of the second clamping ring 2 is applied or create is.
  • Kraftbeierschlagungsmittel 9 come into use, which is a force substantially in the axial direction of the
  • a tensioning mechanism may be attached to the measuring head 5, in particular in the form of a or
  • a plurality of levers for example in the form of eccentrically acting rocker arms, by means of which a force on the frontal power transmission surfaces lb, 2b of the first and / or second clamping ring 1, 2 can be effected.
  • the Kraftbeierschlagungsmittel 9 also in the form of, in particular commercial,
  • Nut be designed with a front side 9a or the like, which for the bracing of the cylindrical measuring head 5 in the support structure 4 on the external thread 12 of the cylindrical measuring head. 5
  • a connecting means for example a
  • Bolting means comprising, which connects the first and the second clamping ring 1, 2 with each other (not shown in Fig. 5).
  • Invention can also only the first or only second clamping ring 1, 2 based on the connecting means in the
  • Ring gap 7 be braced by the connecting means connected to the cylindrical measuring head 5 and / or
  • the diameter of the external thread 12 is smaller than the diameter along the as
  • the wall thickness of the force-applying means 9 at its end face 9a is less than the gap width of the annular gap 7, so that at least a part of the
  • Support structure 4 can be arranged sunk, so that there is a flush surface of the support structure 4.
  • Transition region to the outer surface 8 adapted as a clamping ring system attached to the Kraftbeaufschlagungsstoff 9 toward recess 13 b, each in the form of an undercut, mounted, wherein in an alternative embodiment of the device according to the invention also only one
  • Recess 13a on the Kraftbeierschlagungsstoff 9, or a recess 13b may be attached to the measuring head 5.

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

Abstract

L'invention concerne un dispositif de détermination de contraintes exercées sur une structure de support, comprenant un capteur dynamométrique (3) équipé d'une tête de mesure (5) de forme sensiblement cylindrique, qui est ou peut être disposée dans un trou (6) de la structure de support (4). La tête de mesure (5) possède une surface de base (18) et une surface extérieure (8) adaptée pour servir d'appui à un anneau dynamométrique. Pour immobiliser radialement la tête de mesure (5) par rapport à une surface intérieure du trou (6) est enserré au moins un premier anneau dynamométrique (1) comportant au moins une surface de transmission de force conique (1a). Le dispositif comprend au moins un moyen d'application de force (9) disposé de manière à solliciter le premier anneau dynamométrique (1) sensiblement dans le sens axial de la tête de mesure (5) cylindrique. Selon l'invention, la tête de mesure (5) comporte un corps déformable (17) en forme de disque, qui est disposé parallèlement à la surface de base (18) et sur lequel est appliqué au moins un extensomètre.
PCT/IB2013/000130 2012-02-02 2013-01-29 Dispositif de détermination de contraintes exercées sur une structure de support WO2013114190A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210001916 DE102012001916A1 (de) 2012-02-02 2012-02-02 Messsystem zur Erfassung von Kräftebelastungen einer Stützstruktur
DE102012001916.5 2012-02-02

Publications (1)

Publication Number Publication Date
WO2013114190A1 true WO2013114190A1 (fr) 2013-08-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/000130 WO2013114190A1 (fr) 2012-02-02 2013-01-29 Dispositif de détermination de contraintes exercées sur une structure de support

Country Status (2)

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DE (1) DE102012001916A1 (fr)
WO (1) WO2013114190A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106706195A (zh) * 2016-11-30 2017-05-24 武汉理工光科股份有限公司 基于光栅波长解调原理的应变式张力围栏传感器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108139264B (zh) 2015-09-14 2020-08-04 马可迅车轮美国有限责任公司 具有改进的用于监测各种车辆状况的监测能力的车轮组件以及用于完成这种监测的监测装置
CN111024290A (zh) * 2019-12-17 2020-04-17 北京强度环境研究所 一种用于测量连接带张力的张力传感器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934414A1 (de) 1978-08-29 1980-03-20 Kurt Eilert Johansson System zur messung einer kraft mit richtungsorientierten spannungs-messelementen
DE3531245A1 (de) 1985-02-13 1986-08-14 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zum messen der achslast von fahrzeugen
EP0344496A2 (fr) * 1988-05-28 1989-12-06 Mannesmann Kienzle GmbH (HR B1220) Support pour l'installation d'une strain-gange
CH679950A5 (en) * 1985-10-21 1992-05-15 Messerschmitt Boelkow Blohm Railway line or beam force measurement appts.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934414A1 (de) 1978-08-29 1980-03-20 Kurt Eilert Johansson System zur messung einer kraft mit richtungsorientierten spannungs-messelementen
DE3531245A1 (de) 1985-02-13 1986-08-14 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zum messen der achslast von fahrzeugen
CH679950A5 (en) * 1985-10-21 1992-05-15 Messerschmitt Boelkow Blohm Railway line or beam force measurement appts.
EP0344496A2 (fr) * 1988-05-28 1989-12-06 Mannesmann Kienzle GmbH (HR B1220) Support pour l'installation d'une strain-gange

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106706195A (zh) * 2016-11-30 2017-05-24 武汉理工光科股份有限公司 基于光栅波长解调原理的应变式张力围栏传感器
CN106706195B (zh) * 2016-11-30 2019-10-01 武汉理工光科股份有限公司 基于光栅波长解调原理的应变式张力围栏传感器

Also Published As

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