DE1996317U - WASHER FOR SCREW CONNECTIONS. - Google Patents
WASHER FOR SCREW CONNECTIONS.Info
- Publication number
- DE1996317U DE1996317U DE1996317U DE1996317U DE1996317U DE 1996317 U DE1996317 U DE 1996317U DE 1996317 U DE1996317 U DE 1996317U DE 1996317 U DE1996317 U DE 1996317U DE 1996317 U DE1996317 U DE 1996317U
- Authority
- DE
- Germany
- Prior art keywords
- washer
- incision
- washer according
- shaped
- wedge
- 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
- 239000003086 colorant Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
Classifications
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
- F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
- F16B31/028—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load with a load-indicating washer or washer assembly
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
- F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/95—Constructional details of connections not covered for in other groups of this subclass with markings, colours, indicators or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Description
Die Erfindung betrifft Unterlagscheiben für Schraubverbindungen und dient dem Zweck, beim Festziehen der Schraubverbindung das Erreichen der vorgesehenen Verspannungskraft auf einfache und jederzeit rasch nachprüfbare Weise feststellen zu lassen, wobei die erfindungsgemäße Unterlagscheibe im verspannten Zustand nicht oder jedenfalls nicht erheblich dicker als eine übliche Unterlagscheibe sein soll.The invention relates to washers for screw connections and serves the purpose of allowing the achievement of the intended tensioning force to be determined in a simple and quickly verifiable manner when the screw connection is tightened, with the washer according to the invention in the tensioned state not or at least not significantly thicker than a conventional washer .
Die erfindungsgemäße Unterlagscheibe ist gekennzeichnet durch an ihrem Rande infolge der Verformung beim Anziehen der Schraubverbindung sichtbar werdende Anzeigen für das Vorhandensein einer ausreichenden Verspannungskraft.The washer according to the invention is characterized by indications that a sufficient tensioning force is present on its edge as a result of the deformation when the screw connection is tightened.
Die Unterlagscheibe kann als sogenannte Tellerscheibe ausgebildet sein, die an einer Stelle mit einer nasenförmigen Erweiterung versehen ist. Dieser vorstehende Scheibenteil ist radial aufgeschlitzt, so dass die beiden Nasenteile sich beim Erreichen der vorgesehenen Spannung beim Festziehen sichtbar auseinanderspreizen.The washer can be designed as a so-called plate washer, which is provided with a nose-shaped extension at one point. This protruding disk part is slit open radially so that the two nose parts visibly spread apart when the intended tension is reached when tightening.
Weitere Ausführungsformen der Erfindung werden durch Scheiben dargestellt, deren Schmalseiten auf dem ganzen Umfang eingeschlitzt sind. In diesen Schlitz kann geeignetes Verdrängungsmaterial, bspw. auffallende Farbe oder ein keilförmiger Verdrängungsring, eingefügt sein. Beim Erreichen des vorgesehenen Verspannungs-Endzustandes der Verbindung verschwindet der Schlitz für das Auge, oder es wird das Verdrängungsmaterial herausgedrückt und bildet so ein gut sichtbares Kennzeichen.Further embodiments of the invention are represented by disks, the narrow sides of which are slotted over the entire circumference. Suitable displacement material, for example a striking color or a wedge-shaped displacement ring, can be inserted into this slot. When the intended end tension of the connection is reached, the slot for the eye disappears, or the displacement material is pushed out and thus forms a clearly visible indicator.
In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigenExemplary embodiments of the invention are shown in the drawing. Show it
Fig. 1 eine Ansicht von oben und von der Seite auf eine lose Tellerscheibe, Fig. 2 dieselben Ansichten auf die Scheibe in ihrem Endbelastungszustand, Fig. 3 u. 5 einen Querschnitt durch je eine unbelastete Unterlagscheibe mit aufgeschlitztem Rand und Fig. 4 u. 6 dieselben Scheiben wie in Fig. 3 und 5 in ihrem Endbelastungszustand.1 shows a view from above and from the side of a loose cup washer, FIG. 2 shows the same views of the washer in its end load condition, FIGS. 6 the same disks as in FIGS. 3 and 5 in their final load condition.
Die als Tellerscheibe 7 ausgebildete Unterlagscheibe nach den Figuren 1 und 2 ist an einer Stelle mit einem nasenförmig erweiterten Rand 8 versehen. Diese Nase 8 ist an ihrem schmalen Ende 9 mit einem Schlitz 10 eingeschnitten. Beim Anziehen der Schraubverbindung flacht sich die Tellerscheibe unter Aufspreizung des Schlitzes 10 ab. Beim Festziehen der Mutter in ihren Endzustand, in dem also die vorgesehene Verspannkraft der Schraubenverbindung erreicht ist, ist die Unterlagscheibe voll abgeflacht, und der Schlitz 10 ist auffällig auseinandergespreizt.The washer according to FIGS. 1 and 2, designed as a washer 7, is provided at one point with an edge 8 that is widened in the shape of a nose. This nose 8 is cut with a slot 10 at its narrow end 9. When the screw connection is tightened, the plate washer flattens out, with the slot 10 spread apart. When the nut is tightened in its final state, in which the intended tensioning force of the screw connection is reached, the washer is fully flattened and the slot 10 is noticeably spread apart.
Bei den Ausführungen nach den Figuren 3 und 4 weist die Unterlagscheibe 11 auf ihrer Schmalseite 11a einen umlaufenden, niedrigen Einschnitt auf. In diesem Einschnitt, der nach innen kammerförmig (12a) ausgeweitet ist, ist ein Farbmittel 13 eingeführt. Beim Zusammenpressen der Unterlagscheibe wird das Farbmittel als sichtbarer Wulst 14 (Fig. 4) herausgequetscht. Zu diesem Zweck ist die Verwendung einer dickflüssigen, nicht rasch eintrocknenden und auffälligen Farbe zweckmäßig.In the embodiments according to FIGS. 3 and 4, the washer 11 has a circumferential, low incision on its narrow side 11a. In this incision, which is widened in the shape of a chamber (12a), a colorant 13 is introduced. When the washer is pressed together, the colorant is squeezed out as a visible bead 14 (FIG. 4). For this purpose, it is advisable to use a viscous, noticeable color that does not dry out quickly.
Statt des Farbmittels 13 kann auch ein Keilring 15 in den Scheibenrand einer keilförmig geschlitzten Unterlagscheibe 16 eingefügt sein (Fig. 5). Bei Erreichen des Endlbelastungszustandes der Schraubenverbindung wird der Keilring 15 aus dem Einschnitt 17 der Unterlagscheibe 16 herausgedrückt (Fig. 6).Instead of the colorant 13, a wedge ring 15 can also be inserted into the disk edge of a wedge-shaped slotted washer 16 (FIG. 5). When the final load condition is reached the screw connection, the wedge ring 15 is pressed out of the incision 17 in the washer 16 (FIG. 6).
Auf die beschriebenen Weisen ist durch die Anzeigen 13, 14, 15 bleibend kenntlich gemacht, dass die Schraube in der erforderlichen Stärke angezogen wurde.In the ways described, the displays 13, 14, 15 permanently indicate that the screw has been tightened to the required strength.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996317U DE1996317U (en) | 1968-08-07 | 1968-08-07 | WASHER FOR SCREW CONNECTIONS. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996317U DE1996317U (en) | 1968-08-07 | 1968-08-07 | WASHER FOR SCREW CONNECTIONS. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1996317U true DE1996317U (en) | 1968-11-07 |
Family
ID=33316488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1996317U Expired DE1996317U (en) | 1968-08-07 | 1968-08-07 | WASHER FOR SCREW CONNECTIONS. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1996317U (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2939096A1 (en) * | 1979-09-27 | 1981-04-16 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Measuring and monitoring screw connection clamping force - using deforming pressure measurement washer with peripheral ceramic ring |
EP0448277A1 (en) * | 1990-03-21 | 1991-09-25 | Ford Motor Company Limited | Security test device |
DE102013000597A1 (en) * | 2013-01-16 | 2014-07-17 | Sms Tenzotherm Gmbh | Force plate manufacturing method, involves arranging strain sensor in region that is open in radial direction between two bars, and allowing bars to extend themselves outwardly within plane of annular plate element penetrable with screw |
US10202833B2 (en) | 2013-03-15 | 2019-02-12 | Schlumberger Technology Corporation | Hydraulic fracturing with exothermic reaction |
DE102011121917B4 (en) | 2011-12-22 | 2023-05-04 | Audi Ag | washer |
US11808128B2 (en) | 2017-11-20 | 2023-11-07 | Schlumberger Technology Corporation | Systems and methods of initiating energetic reactions for reservoir stimulation |
-
1968
- 1968-08-07 DE DE1996317U patent/DE1996317U/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2939096A1 (en) * | 1979-09-27 | 1981-04-16 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Measuring and monitoring screw connection clamping force - using deforming pressure measurement washer with peripheral ceramic ring |
EP0448277A1 (en) * | 1990-03-21 | 1991-09-25 | Ford Motor Company Limited | Security test device |
DE102011121917B4 (en) | 2011-12-22 | 2023-05-04 | Audi Ag | washer |
DE102013000597A1 (en) * | 2013-01-16 | 2014-07-17 | Sms Tenzotherm Gmbh | Force plate manufacturing method, involves arranging strain sensor in region that is open in radial direction between two bars, and allowing bars to extend themselves outwardly within plane of annular plate element penetrable with screw |
US10202833B2 (en) | 2013-03-15 | 2019-02-12 | Schlumberger Technology Corporation | Hydraulic fracturing with exothermic reaction |
US11808128B2 (en) | 2017-11-20 | 2023-11-07 | Schlumberger Technology Corporation | Systems and methods of initiating energetic reactions for reservoir stimulation |
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