DE2930520A1 - Single disc force measurement bearing without housing - has strain gauges in holes and anti-twist gauges in countersunk holes and anti-twist cut=outs - Google Patents

Single disc force measurement bearing without housing - has strain gauges in holes and anti-twist gauges in countersunk holes and anti-twist cut=outs

Info

Publication number
DE2930520A1
DE2930520A1 DE19792930520 DE2930520A DE2930520A1 DE 2930520 A1 DE2930520 A1 DE 2930520A1 DE 19792930520 DE19792930520 DE 19792930520 DE 2930520 A DE2930520 A DE 2930520A DE 2930520 A1 DE2930520 A1 DE 2930520A1
Authority
DE
Germany
Prior art keywords
bearing
disc
measuring
holes
twist
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.)
Ceased
Application number
DE19792930520
Other languages
German (de)
Inventor
Erich Brosa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19792930520 priority Critical patent/DE2930520A1/en
Publication of DE2930520A1 publication Critical patent/DE2930520A1/en
Ceased legal-status Critical Current

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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
    • G01L5/0009—Force sensors associated with a bearing
    • G01L5/0019—Force sensors associated with a bearing by using strain gages, piezoelectric, piezo-resistive or other ohmic-resistance based sensors
    • 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
    • G01L1/2237—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 the direction being perpendicular to the central axis
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Measurement Of Force In General (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The force measurement bearing of economical, very simple construction consists essentially of a single disc without a housing or bracket plate yet whose strain gauge measurement elements are extremely well protected. The ball bearing (1) or journal bearing fits into the disc (2) which has two diametrically opposed shear force measurement points. These are countersunk holes (3) with flat walls (4) receiving strain gauge elements which may be used for strain or shear force transducers. Cut-outs (8) are made in the disc to produce higher elasticity at the measurement points. These produce parallel flexible sections (9,10) which oppose movement of the bearing assembly (7) out of the plane and thus provide measurement point damage protection. It is a one-piece device apart from the hole caps and requires no other covers or stabilisation.

Description

Meßlager Measuring bearing

Zweck der Erfindung ist, ein billiges Kraftmeßlager, einfachster Konstruktion, herzustellen, im Wesentlichen aus einer einzigen Scheibe bestehend, ohne Gehäuse oder Stützplatten, bei dem die verwendeten Dehnungs-Meßelemente (DMS) hervorragend geschützt sind.The purpose of the invention is to provide an inexpensive load cell bearing of the simplest construction, manufacture, consisting essentially of a single disc, without a housing or support plates in which the strain gauges used are excellent are protected.

Es sind Kraftmeßlager bekannt, die eine einseitige mit DMS beklebte offene Biegestelle besitzen. Gegen ein Ausbiegen des Lagerträgers aus der Ebene sind besondere Gehäuseteile erforderlich. Die DMS sind nicht hermetisch dicht verschlossen.There are known force measuring bearings that have a one-sided bonded with strain gauges have open bending points. Against bending of the bearing bracket out of the plane special housing parts are required. The strain gauges are not hermetically sealed.

Die elastische, vorzugsweise aus Stahl gefertigte, das zentrale Lager 2 aufnehmende Scheibe 1 hat, zwei gegenüberliegend angeordnete, durch beiderseitige Aussenkungen 3 gebildete Schubkraftmeßstellen 4, die mit den entsprechenden DMS 5 beiderseits versehen sind und senkrecht 6 zur achse A-B beansprucht werden, Abb. 1 und 2.The elastic, preferably made of steel, the central bearing 2 receiving disc 1 has, two oppositely arranged, by bilateral Recesses 3 formed Schubkraftmeßstellen 4, which with the corresponding DMS 5 are provided on both sides and are stressed perpendicular 6 to the axis A-B, Fig. 1 and 2.

Um die Nachgiebigkeit der Lagerfassung 7 zu erhöhen, aber gleichzeitig ein Herauskippen derselben aus der Scheibenebene um die Achse A-B zu verhinrn, sind die Schlitze 8 so ausgebildet, daß z.B. in der Lastrichtung 6 biegeweiche Parallelführungen 9 und 1o mit einfacher 9 oder doppelter 10 Uberlappung eingearbeitet sind.To increase the flexibility of the bearing mount 7, but at the same time they are to be prevented from tilting out of the plane of the disk about the axis A-B the slots 8 are designed so that, for example, in the load direction 6 flexible parallel guides 9 and 1o are incorporated with a single 9 or double 10 overlap.

Die Parallelführungen lo, welche einen dicht abdeckbaren Hohlraum 17 bilden, können ebenfalls zur Aufnahme von DMS 18 dienen. Dann werden die Durchbrüche 19 in der Achse A-B zu Parallelführungen 20 bzw. Stabilisatoren umgestaltet, Abb. 3.The parallel guides lo, which have a tightly coverable cavity 17 can also be used to accommodate DMS 18. Then the breakthroughs 19 in the axis A-B redesigned to parallel guides 20 or stabilizers, Fig. 3.

11 und 12 sind Wegbegrenzungsanschläge. 13 sind sehr dünnwandige dicht eingedrückte, vor Staub und Nässe schützende Schutzkappen. Die Verbindung der Meßstellen 4 und 4' durch nicht gezeichnete Meßleitungen wird durch die Bohrungen 14 und dem Ringkanal 15, der durch Vergießen und die Lagerschale 2 geschützt wird, hergestellt und zum Kabelanschluß 16 geführt, Abb. 1 und 2.11 and 12 are travel limit stops. 13 are very thin-walled tight Depressed protective caps to protect against dust and moisture. The connection of the measuring points 4 and 4 'by measuring lines not shown is through the holes 14 and the Annular channel 15, which is protected by potting and the bearing shell 2, made and led to the cable connection 16, Figs. 1 and 2.

Um diese DMS 18 zu schützen sind Vertiefungen 21 eingefräst, in welchen beiderseits abdeckende Blechplatten 22, z.B. durch Schweißen, befestigt sind. Die Verbindung der Maß stellen 18 mit dem Stecker 16 oder Kabel erfolgt wie oben beschrieben, Abb. 3. In order to protect these DMS 18, recesses 21 are milled into them sheet metal plates 22 covering both sides are attached, e.g. by welding. the Connection of the measure places 18 with the plug 16 or cable takes place as described above, Fig. 3.

LeerseiteBlank page

Claims (6)

Patentansprüche 1 frafbmeßlager dadurch gekennzeichnet, daß in einer, ein Wälz- (2) oder Gleitlager aufnehmenden Scheibe (1) zwei gegenüberliegende Schubkraft-Meßstellen dadurch gebildet sind, daß je zwei beiderseitige Aussenkungen (3) eine flache Wand (4) ergeben, zwecks Aufnahme von Dehnungsmeßelementen (5) zur wahlweisen Verwendung als Dehnungs- oder Schubspannungsgeber. Patent claims 1 frafbmeßlager characterized in that in one, a roller (2) or plain bearing receiving disc (1) two opposing thrust measuring points are formed in that two recesses (3) on each side have a flat wall (4) for the purpose of receiving strain gauges (5) for optional use as strain or shear stress transducer. 2 Kraftmeßlager nach Anspruch 1, dadurch gekennzeichnet, daß zur Erzeugung hoher Elastizität an den Meßstellen solche Einschnitte (8) vorhanden sind, die biegeweiche Parallelführungen (9 und 10) ergeben, die verhindern, daß die Lagerfassung (7) aus der Scheibe (1) in der Ebene herausgedreht werden kann und so die Meßstellen (4) vor Beschädigung schützt.2 force measuring bearing according to claim 1, characterized in that for generating high elasticity at the measuring points there are incisions (8) that are pliable Parallel guides (9 and 10) result, which prevent the bearing mount (7) from the disc (1) can be unscrewed in the plane and thus the measuring points (4) protects against damage. 3 Kraftmeßlager nach Anspruch 1-2, dadurch gekennzeichnet, daß dasselbe bis auf die Kapseln (13) aus einem Stück besteht und keiner weiteren Abdeckungen bzw. Stabilisierungen bedarf.3 force measuring bearing according to claim 1-2, characterized in that the same consists of one piece except for the capsules (13) and no other covers or stabilization is required. 4 Kraftmeßlager nach Anspruch 1-3, dadurch gekennzeichnet, daß durch Eindrücken von, die SIessung nicht beeinflussenden elastischen Kapseln (13), die empfindlichen Meßelemente (5) z.B. gegen Feuchtigkeit absolut geschützt sind.4 force measuring bearing according to claims 1-3, characterized in that by Pressing in elastic capsules (13) which do not affect the measurement sensitive measuring elements (5) are absolutely protected against moisture, for example. 5 Kraftmeßlager nach Anspruch 1-4, dadurch gekennzeichnet, daß die Verbindungsleitungen von einer Meßstelle zur anderen über eine durch die äußere Wälzlagerschale (2) geschützte und vergossene Nut in der Scheibe (1) sowie Bohrungen (14) geführt werden.5 force measuring bearing according to claim 1-4, characterized in that the Connection lines from one measuring point to the other via one through the outer one Rolling bearing shell (2) protected and cast groove in the disc (1) as well as holes (14). 6 Kraftmeßlager nach Anspruch 1-5, dadurch gekennzeichnet, daß die Durchbrüche (19) die Bildung der Parallelführungen (20) ergeben.6 force measuring bearings according to claims 1-5, characterized in that the Breakthroughs (19) result in the formation of the parallel guides (20).
DE19792930520 1979-07-27 1979-07-27 Single disc force measurement bearing without housing - has strain gauges in holes and anti-twist gauges in countersunk holes and anti-twist cut=outs Ceased DE2930520A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792930520 DE2930520A1 (en) 1979-07-27 1979-07-27 Single disc force measurement bearing without housing - has strain gauges in holes and anti-twist gauges in countersunk holes and anti-twist cut=outs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792930520 DE2930520A1 (en) 1979-07-27 1979-07-27 Single disc force measurement bearing without housing - has strain gauges in holes and anti-twist gauges in countersunk holes and anti-twist cut=outs

Publications (1)

Publication Number Publication Date
DE2930520A1 true DE2930520A1 (en) 1981-02-12

Family

ID=6076946

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792930520 Ceased DE2930520A1 (en) 1979-07-27 1979-07-27 Single disc force measurement bearing without housing - has strain gauges in holes and anti-twist gauges in countersunk holes and anti-twist cut=outs

Country Status (1)

Country Link
DE (1) DE2930520A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596155A (en) * 1983-12-27 1986-06-24 Kistler-Morse Corporation Isotropic strain sensor and load cell employing same
EP0307998A2 (en) * 1987-09-12 1989-03-22 Philips Patentverwaltung GmbH Force sensor
US4934573A (en) * 1985-08-24 1990-06-19 Knut Jaeger Support for carrying loads on the back, in particular for rucksacks
FR2677761A1 (en) * 1991-06-11 1992-12-18 Lorraine Laminage METHOD AND DEVICE FOR MEASURING EFFORTS APPLIED ON CONTINUOUS CASTING ROLLERS.
DE4313862C1 (en) * 1993-04-28 1994-07-28 Hottinger Messtechnik Baldwin Shaft bearing with sealed casing and load-measuring device
DE19917020C2 (en) * 1999-04-15 2001-09-13 Dieter Michael Krone Measuring bush for the detection of radial bearing forces
DE102004043754B3 (en) * 2004-09-10 2006-04-20 Fag Kugelfischer Ag & Co. Ohg Measuring device for detecting loads on a bearing
WO2009014449A1 (en) * 2007-07-04 2009-01-29 Aker Kvaerner Pusnes As A load cell

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2124977A1 (en) * 1970-06-01 1971-12-16 Bofors Ab Load cell (transducer) with two members that can move against each other in the measuring direction
SU551522A1 (en) * 1975-12-24 1977-03-25 Научно-Исследовательский И Конструкторский Институт Испытательных Машин,Приборов И Средств Измерения Масс (Никимп) Force measuring device
DE2716024A1 (en) * 1976-06-28 1978-01-12 Heinrich Gruenbaum ROLLER BEARING HOUSING

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2124977A1 (en) * 1970-06-01 1971-12-16 Bofors Ab Load cell (transducer) with two members that can move against each other in the measuring direction
SU551522A1 (en) * 1975-12-24 1977-03-25 Научно-Исследовательский И Конструкторский Институт Испытательных Машин,Приборов И Средств Измерения Масс (Никимп) Force measuring device
DE2716024A1 (en) * 1976-06-28 1978-01-12 Heinrich Gruenbaum ROLLER BEARING HOUSING

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596155A (en) * 1983-12-27 1986-06-24 Kistler-Morse Corporation Isotropic strain sensor and load cell employing same
US4934573A (en) * 1985-08-24 1990-06-19 Knut Jaeger Support for carrying loads on the back, in particular for rucksacks
EP0307998A2 (en) * 1987-09-12 1989-03-22 Philips Patentverwaltung GmbH Force sensor
EP0307998A3 (en) * 1987-09-12 1990-05-02 Philips Patentverwaltung Gmbh Force sensor
FR2677761A1 (en) * 1991-06-11 1992-12-18 Lorraine Laminage METHOD AND DEVICE FOR MEASURING EFFORTS APPLIED ON CONTINUOUS CASTING ROLLERS.
EP0519788A1 (en) * 1991-06-11 1992-12-23 Sollac Device for measuring the forces applied to the rollers of a continuous casting machine
DE4313862C1 (en) * 1993-04-28 1994-07-28 Hottinger Messtechnik Baldwin Shaft bearing with sealed casing and load-measuring device
DE19917020C2 (en) * 1999-04-15 2001-09-13 Dieter Michael Krone Measuring bush for the detection of radial bearing forces
DE102004043754B3 (en) * 2004-09-10 2006-04-20 Fag Kugelfischer Ag & Co. Ohg Measuring device for detecting loads on a bearing
WO2009014449A1 (en) * 2007-07-04 2009-01-29 Aker Kvaerner Pusnes As A load cell

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