DE2939842C2 - - Google Patents
Info
- Publication number
- DE2939842C2 DE2939842C2 DE19792939842 DE2939842A DE2939842C2 DE 2939842 C2 DE2939842 C2 DE 2939842C2 DE 19792939842 DE19792939842 DE 19792939842 DE 2939842 A DE2939842 A DE 2939842A DE 2939842 C2 DE2939842 C2 DE 2939842C2
- Authority
- DE
- Germany
- Prior art keywords
- measuring ring
- force measuring
- ring according
- overload protection
- force
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Measurement Of Force In General (AREA)
Description
Die Erfindung betrifft eine Weiterbildung einer ringförmigen Druckkraftmeßzelle zur Ermittlung von axial auf diesen Ring wirkenden Kräften, wie sie in Patent 23 57 484 beschrieben ist.The invention relates to a development of an annular compression force measuring cell for the determination of forces acting axially on this ring, as described in patent 23 57 484 is described.
Vorliegende Erfindung geht aus von einem Kraftmeßring der dort geschützten Art und stellt sich die Aufgabe, eine Ausführung zu bieten, die bei ver hältnismäßig niederen Meßbereichen einen hohen Überlastschutz bietet.The present invention is based on a force measuring ring protected there Art and arises the task of offering an execution that ver relatively low measuring ranges offers high overload protection.
Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Im Wesentlichen geschieht dies dadurch, daß die dünn wandige Stauchzylinderkonstruktion von Patent 23 57 484 durch eine Biegeplatten konstruktion ersetzt wird, die größere Verformungswege hat und deshalb die Gestaltung eines mechanischen Überlastanschlages ermöglicht. Ein weiterer, sich ergebender Vorteil, ist der bessere Schutz der DMS, z. B. vor Feuchtigkeit.This object is achieved by the characterizing features of claim 1 solved. Essentially, this happens because the thin Walled upsetting cylinder construction of patent 23 57 484 by a bending plate construction is replaced, which has larger deformation paths and therefore the Design of a mechanical overload stop enables. Another, resulting advantage is the better protection of the DMS, e.g. B. from moisture.
Anhand der Abb. 1 bis Abb. 5 soll die Erfindung im folgenden beispielhaft beschrieben werden.On the basis of Fig. 1 to Fig. 5, the invention will be described by way of example.
Abb. 1 zeigt einen Axialschnitt durch den im wesentlichen rotationssym metrischen Kraftmeßring. In Fig. 1 shows an axial section through the essentially rotationally symmetrical force measuring ring. In
Abb. 2 ist die Einzelheit Z vergrößert dargestellt. Fig. 2 shows the detail Z enlarged.
Abb. 3 zeigt den Schnitt A-B durch den erfindungsgemäßen Kraftmeßring von Abb. 1. In Fig. 3 shows the section AB through the force measuring ring according to the invention from Fig. 1. In
Abb. 4 und Abb. 5 sind besondere Ausführungsformen dargestellt. Fig. 4 and Fig. 5 show special embodiments.
In Abb. 1 erkennt man die ringförmige Biegeplattenkonstruktion 1, die über die Stege 4 mit den bekannten Ausgleichringen 6 für unebene Belastungsflächen verbunden sind. Dabei lassen sich für die gleiche Belastung größer Meßwege infolge Durchbiegung von 1 und damit ein genauer wirkenden und höheren Überlastschutz durch die konzentrischen Überlastrippen 2 erzeugen. Im unbe lasteten Zustand ist zwischen den Überlastrippen 2 ein Spalt 10 (Abb. 2) vorhanden, der sich bei Überschreiten des Meßbereichs schließt und keine weitere Durchbiegung der Biegeplatte 1 zuläßt. Für die radial wirkenden DMS 3 (= Dehnungsstreifen) haben sie Unterbrechungen 5, damit die DMS 3 in der Mitte der Ringbreite von 1 zu befestigen sind, um eine möglichst schmale Ringbreite 7 erzeugen zu können.In Fig. 1 you can see the annular bending plate construction 1 , which are connected via the webs 4 with the known compensating rings 6 for uneven load surfaces. Larger measuring paths can be generated for the same load due to deflection of 1 and thus a more effective and higher overload protection by the concentric overload ribs 2 . In the unloaded state, there is a gap 10 between the overload ribs 2 ( FIG. 2), which closes when the measuring range is exceeded and does not permit any further deflection of the bending plate 1 . For the radially acting strain gauges 3 (= stretch marks) they have interruptions 5 so that the strain gauges 3 are to be fastened in the middle of the ring width of 1 in order to be able to produce a ring width 7 that is as narrow as possible.
Die obere und untere Biegeplatte 1, von denen es auch genügt, nur eine mit DMS 3 zu bestücken, können innen und außen durch Schweißen 8, wodurch ein geschlossener Raum für die DMS entsteht, oder durch Gewinderinge 13, 13′ bzw. Bördelringe 15, 15′ zusammengehalten werden, (Abb. 5).The upper and lower bending plate 1 , of which it is also sufficient to equip only one with strain gages 3 , can be welded internally and externally 8 , which creates a closed space for the strain gauges, or by means of threaded rings 13, 13 ' or crimp rings 15, 15 'are held together ( Fig. 5).
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792939842 DE2939842A1 (en) | 1979-10-02 | 1979-10-02 | Force measurement ring with overload protection - using annular protection rib centrally placed in measurement annulus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792939842 DE2939842A1 (en) | 1979-10-02 | 1979-10-02 | Force measurement ring with overload protection - using annular protection rib centrally placed in measurement annulus |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2939842A1 DE2939842A1 (en) | 1981-04-16 |
DE2939842C2 true DE2939842C2 (en) | 1987-07-30 |
Family
ID=6082442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19792939842 Granted DE2939842A1 (en) | 1979-10-02 | 1979-10-02 | Force measurement ring with overload protection - using annular protection rib centrally placed in measurement annulus |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2939842A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT390327B (en) * | 1988-08-18 | 1990-04-25 | Brosa Erich | Annular compression-force measuring cell |
-
1979
- 1979-10-02 DE DE19792939842 patent/DE2939842A1/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT390327B (en) * | 1988-08-18 | 1990-04-25 | Brosa Erich | Annular compression-force measuring cell |
Also Published As
Publication number | Publication date |
---|---|
DE2939842A1 (en) | 1981-04-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AF | Is addition to no. |
Ref country code: DE Ref document number: 2357484 Format of ref document f/p: P |
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8110 | Request for examination paragraph 44 | ||
AF | Is addition to no. |
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D2 | Grant after examination | ||
8364 | No opposition during term of opposition |