DE1145441B - Screw connection - Google Patents
Screw connectionInfo
- Publication number
- DE1145441B DE1145441B DER25946A DER0025946A DE1145441B DE 1145441 B DE1145441 B DE 1145441B DE R25946 A DER25946 A DE R25946A DE R0025946 A DER0025946 A DE R0025946A DE 1145441 B DE1145441 B DE 1145441B
- Authority
- DE
- Germany
- Prior art keywords
- screw
- screw part
- screw connection
- sleeve
- transverse
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000000034 method Methods 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
- F16B31/04—Screwed connections specially modified in view of tensile load; Break-bolts for maintaining a tensile load
- F16B31/043—Prestressed connections tensioned by means of liquid, grease, rubber, explosive charge, or the like
-
- 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
- F16B4/00—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
- F16B4/002—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings engaging or disengaging by means of fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Clamps And Clips (AREA)
Description
Das Patent 958 516 schützt Schraubverbindungen, deren Schraubteil vor dem Festziehen der Muttern durch eine unter Druck stehende Flüssigkeit vorgespannt, d. h. gelängt wird. Nach dem Anziehen der Muttern und Ablassen des Flüssigkeitsdruckes überträgt sich die der vorangegangenen Dehnung entsprechende axiale Kraft auf die gesamte Schraubverbindung. The patent 958 516 protects screw connections, their screw part from tightening the nuts biased by a pressurized fluid, d. H. is lengthened. After getting dressed the nuts and releasing the fluid pressure is transferred to that of the previous stretch corresponding axial force on the entire screw connection.
Durch den hohen Flüssigkeitsdruck im Innern des Schraubteiles treten jedoch auch tangentiale Zugspannungen auf, die eine Querdehnung, d. h. eine Verkürzung des Schraubteiles, herbeiführen. Die wirksame Längung des Schraubteiles ist die Differenz zwischen der Längung durch die hydraulischen Axialkräfte und der Verkürzung durch die auftretende tangentiale Zugspannung.However, due to the high fluid pressure inside the screw part, there are also tangential tensile stresses on which a transverse strain, d. H. a shortening of the screw part. The effective The elongation of the screw part is the difference between the elongation caused by the hydraulic axial forces and the shortening due to the tangential tensile stress that occurs.
Das Maß der erzielten Längung bestimmt andererseits die gewünschte Vorspannung, die man z. B. den Einbaustücken erteilen will.The degree of elongation achieved, on the other hand, determines the desired bias, which is z. B. the Wants to issue chocks.
Um diese unerwünschten Tangentialspannungen und die damit verbundenen Querdehnungen zu vermeiden, wurde bereits nach einem bekannten Verfahren in ein rohrförmiges Schraubteil einKembolzen mit einem abdichtenden Kolben eingesetzt, so daß die verbleibende Höhe des Druckraumes beliebig klein sein kann. Damit treten in ihrer Wirksamkeit nur noch geringe tangentiale Zugspannungen auf, und zwar im Bereich der geringen Höhe des Druckraumes. In order to avoid these unwanted tangential stresses and the associated transverse strains, a Kembolzen was already in a tubular screw part according to a known method used with a sealing piston, so that the remaining height of the pressure chamber is arbitrarily small can be. This means that only slight tangential tensile stresses occur in their effectiveness, and although in the area of the low height of the pressure chamber.
Die vorliegende Erfindung verhindert die Querdehnung des Schraubteiles durch Querbohrungen vom inneren Hohlraum des Schraubteiles zur äußeren Mantelfläche. Diese Querbohrungen werden durch eine an ihren Enden abdichtende Hülse abgedeckt.The present invention prevents the transverse expansion of the screw part through transverse bores from the inner cavity of the screw to the outer surface. These cross holes are through covered a sleeve sealing at their ends.
Die Lösung ist deshalb so einfach, da in den meisten Fällen .die in der Abbildung gezeigte Hülse a durch das zu spannende Maschinenteil selbst ersetzt wird.The solution is so simple because in most cases. The sleeve a shown in the figure is replaced by the machine part to be clamped itself.
Die Abbildimg zeigt ein Ausführungsbeispiel, bei dem über das Schraubteil c eine Hülse α geschoben ist, welche Tangentialspannungen aufnimmt, ohne die Längsdehnung des eigentlichen Schraubteiles zu beeinflussen. Die Hülse α ist oben und unten zum Schraubteil abgedichtet. Diese Abdichtung kann z. B. einseitig auch durch eine feste Verbindung hergestellt werden. Beim Längen des Schraubteiles wird nun SchraubverbindungThe illustration shows an embodiment in which a sleeve α is pushed over the screw part c , which takes up tangential stresses without influencing the longitudinal expansion of the actual screw part. The sleeve α is sealed at the top and bottom to the screw part. This seal can, for. B. can also be established on one side by a fixed connection. When lengthening the screw part, there is now a screw connection
Zusatz zum Patent 958 516Addendum to patent 958 516
Anmelder:Applicant:
Rheinische Armaturen- und Maschinenfabrik,Rheinische Armaturen- und Maschinenfabrik,
Albert Sempell,
Mönchengladbach, Lürriperstr. 1-13Albert Sempell,
Mönchengladbach, Lürriperstr. 1-13
Dipl.-Ing. Carl Heinz Häfele, Mönchengladbach,
ist als Erfinder genannt wordenDipl.-Ing. Carl Heinz Häfele, Mönchengladbach,
has been named as the inventor
nicht nur Flüssigkeit in den Hohlraum b eingedrückt, sondern gleichzeitig über die Querbohrungen d in den Spaltraum zwischen Schraubteile und Hülse α. Es erfolgt nun eine starke Längung ohne Querdehnung.not only is the liquid pressed into the cavity b , but at the same time via the transverse bores d into the gap between the screw parts and the sleeve α. There is now a strong elongation without transverse expansion.
Claims (2)
Deutsche Auslegeschriften Nr. 1050291,1054042.Considered publications:
German Auslegeschriften No. 1050291,1054042.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER25946A DE1145441B (en) | 1953-03-26 | 1959-07-15 | Screw connection |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER11278A DE958516C (en) | 1953-03-26 | 1953-03-26 | Screw connection with a screw part that is pre-tensioned by a pressurized fluid before tightening |
| DER25946A DE1145441B (en) | 1953-03-26 | 1959-07-15 | Screw connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1145441B true DE1145441B (en) | 1963-03-14 |
Family
ID=25991132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DER25946A Pending DE1145441B (en) | 1953-03-26 | 1959-07-15 | Screw connection |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1145441B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1054042B (en) * | 1957-12-23 | 1959-04-02 | Moeller & Neumann Gmbh | Device for the length of a tie rod independent of the clamping nut |
| DE1050291B (en) * | 1963-10-09 | 1967-09-14 | Moeller ß. Neumann G.m.b.H., St. Ingbert/Saar | Device for the length of a tie rod independently of the clamping nut |
-
1959
- 1959-07-15 DE DER25946A patent/DE1145441B/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1054042B (en) * | 1957-12-23 | 1959-04-02 | Moeller & Neumann Gmbh | Device for the length of a tie rod independent of the clamping nut |
| DE1050291B (en) * | 1963-10-09 | 1967-09-14 | Moeller ß. Neumann G.m.b.H., St. Ingbert/Saar | Device for the length of a tie rod independently of the clamping nut |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE1452005A1 (en) | Hydraulic system to compensate for the yielding of the hydraulically adjustable roller of a rolling mill | |
| DE1145441B (en) | Screw connection | |
| DE1115696B (en) | Device for forming pipes | |
| AT212869B (en) | Device for the transmission of braking u. a. loads acting in the longitudinal direction of the bridge on the substructure | |
| DE1060335B (en) | Hydraulic pit ram, the pressure chamber of which is equipped with a plurality of spaced apart piston surfaces arranged one above the other | |
| DE1054042B (en) | Device for the length of a tie rod independent of the clamping nut | |
| DE872844C (en) | Clamping head for rod-shaped tendons of prestressed concrete components | |
| DE1066065B (en) | Pipe connection | |
| DE1583992C (en) | Process for increasing the strength properties of thick-walled metal high-pressure pipes | |
| DE2134060C3 (en) | Butt joint of structural steel bars from reinforced concrete | |
| DE811109C (en) | Method and device for the production of seamless hollow bodies, in particular tubes on shock bars | |
| AT220113B (en) | Hydraulic ram or support or the like, in particular pit ram | |
| DE667284C (en) | Socket pipe connection with roll seal | |
| DE1047585B (en) | Cross forging die for narrowing gradually turned and advanced pipe ends | |
| DE1148513B (en) | Hydraulically expandable tie rod with core bolt, independent of the clamping nut | |
| AT259488B (en) | Hydraulic pit ram | |
| DE532816C (en) | Hydraulic jaw press | |
| DE975177C (en) | Two-part steel pit stamp | |
| DE2213561A1 (en) | METHOD AND DEVICE FOR FORMING A SLEEVE WITH A CIRCULAR CORRUGATION AT THE END OF A PIPE MADE OF THERMOPLASTIC PLASTIC | |
| DE1050291B (en) | Device for the length of a tie rod independently of the clamping nut | |
| AT141603B (en) | Method and device for the production of compacts. | |
| DE539166C (en) | Hydraulic blasting sleeve for blasting rocks | |
| AT216984B (en) | Process for the production of a collar of pneumatic hammer tool bars | |
| CH400677A (en) | Device for hydraulic pretensioning of a screw bolt | |
| CH462080A (en) | Verfahren und Vorrichtung zum Anformen eines Ringwulstes an einer glattmanteligen Rohrleitung |