DE283525C

DE283525C -

Info

Publication number: DE283525C
Application number: DENDAT283525D
Authority: DE

Description

KAISERLICHES-IMPERIAL-

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

KLASSE 47«. GRUPPECLASS 47 «. GROUP

HEINRICH SPIERA in BUDAPEST.HEINRICH SPIERA in BUDAPEST.

Patentiert im Deutschen Reiche vom 3. Januar 1914 ab.Patented in the German Empire on January 3, 1914.

Die Erfindung betrifft eine Schraubensicherung mit in das geschlitzte Bolzenende eingeschraubtem kegeligen Sicherungszapfen.
Es ist bekannt, den kegeligen Sicherungszapfen in ein im geschlitzten Bolzcnende vorgesehenes kegeliges Muttergewinde einzuschrauben. Diese Sicherung hat den Nachteil, daß das Bolzenende auf seiner ganzen Länge zusammen mit der zu sichernden Schraubenmutter gleichmäßig radial aufgeweitet, also nur die Reibung zwischen der Schraubenmutter und dem Bolzen vergrößert wird. Größeren ■ Beanspruchungen gegenüber bleibt also in diesem Falle die Schraubenmutter eigentlich ungesichert. Außerdem ist wegen der Gleichartigkeit der Gewinde des Sicherungszapfens und des im Bolzen vorgesehenen kegeligen. Loches für den Zapfen die Pressung zwischen dem Zapfen und seinem Loche niemals so groß, daß der Sicherungszapfen ohne weitere Sicherung festsitzen würde. Diese Nachteile haben es bisher verhindert, daß diese Sicherung sich praktisch durchsetzt, trotzdem sie den großen Vorteil besitzt, daß sie bei der Anbringung wenig Raum beansprucht und die Zugänglichkeit nur des einen Bolzenendes voraussetzt.The invention relates to a screw locking device with a conical locking pin screwed into the slotted end of the bolt.
It is known to screw the conical locking pin into a conical nut thread provided in the slotted bolt end. This securing has the disadvantage that the entire length of the bolt end together with the screw nut to be secured is radially expanded uniformly, that is to say only the friction between the screw nut and the bolt is increased. In this case, the nut actually remains unsecured against greater loads. In addition, because of the similarity of the thread of the locking pin and the tapered thread provided in the bolt. Hole for the pin, the pressure between the pin and its hole is never so great that the locking pin would get stuck without further securing. These disadvantages have hitherto prevented this fuse from becoming established in practice, despite the fact that it has the great advantage that it takes up little space when it is attached and only requires access to one end of the bolt.

Es ist ferner bekannt, im Bolzenende ein zylindrisches Loch vorzusehen und dasselbe mittels eines kegeligen Dornes aufzuweiten.It is also known to provide a cylindrical hole in the bolt end and the same expand by means of a conical mandrel.

Diese Sicherung bietet den großen Vorteil daß durch die nach dem freien Bolzenende allmählich zunehmende Aufweitung desselben außerhalb der zu sichernden Schraubenmutter eine Verdickung erzeugt wird, über die sich die kleineren Innendurchmesser besitzende Schraubenmutter nicht hinwegbewegen kann. Diese Art von Sicherung besitzt aber den großen Nachteil, daß sie eine nicht lösbare und nicht einstellbare Schrauben verbindung ergibt, die außerdem nur in jenen wenigen Fällen verwendet werden kann, in welchen die Konstruktionsverhältnisse das Arbeiten mittels Hammers überhaupt zulassen und beide Enden des Schraubenbolzens zugänglich sind. Auch ein etwaiges Hineinziehen des Dornes mittels einer besonderen Schraubenmutter von dem anderen Ende des Schraubenbolzens her, wie dies für Sicherungen anderer Art bekannt ist, wäre nur in jenen wenigen Fällen möglich, in denen beide Enden des Schraubenbolzens zugänglich sind; außerdem müßte, um eine.ge- ; sicherte Schraubenmuttersicherung zu erhalten, für die besondere Mutter eine Sicherung für sich vorgesehen werden.This fuse has the great advantage that by following the free end of the bolt gradually increasing expansion of the same outside of the screw nut to be secured a thickening is created over which the smaller inner diameter possesses Screw nut cannot move away. However, this type of backup has the big disadvantage that they have a non-releasable and non-adjustable screw connection results, which can also only be used in those few cases in which the Construction conditions allow working with a hammer at all and both ends of the screw bolt are accessible. Also a possible pulling in of the mandrel by means of a special nut from the other end of the bolt, such as This is known for other types of backups, would only be possible in those few cases in both ends of the screw bolt are accessible; also would have to get a.ge-; to get a secured nut lock, a lock for that particular nut be provided.

Alle diese Nachteile werden nun gemäß der Erfindung in der Weise beseitigt, daß für den kegeligen Sicherungszapfen im geschlitzten Bolzenende ein zylindrisches' Muttergewinde vor-All these disadvantages are now eliminated according to the invention in such a way that for the conical locking pin in the slotted end of the bolt, a cylindrical 'nut thread

Claims

is seen. This facility is very noteworthy because it is used in screw constructions Up to now it was considered an inviolable basic principle that the nut thread and the thread of the bolt is completely identical and has the same dimensions otherwise the two threads cannot work together. The invention is based on the knowledge that this principle can be abandoned when the nut thread z. B. by slots so elastic or expandable ge * makes that it depends on the different and larger designed bolt thread can hug. This firstly has the advantage that the screwing in of the conical spigot thread in the nut thread that deviates from it Deformation of the same between the nut and pin thread one against the free end of the bolt increasing friction generates the conical threaded pin against automatic loosening without the use of other parts or Medium, i.e. automatically secures. It also arises as a result of against the end of the screw bolt gradually increasing expansion of the same outside of the nut to be secured a thickening of the screw bolt, over which the nut is automatically can not move away, so that the nut lock is absolutely secure. Since the invention provides a backup that the accessibility of only one end of the bolt presupposes, so all disadvantages of the known fuses are eliminated in such a way that that only the advantages of the same are retained or combined in one backup.

The invention is illustrated by way of example in the drawing.

Any number of slots is provided at the end of the screw bolt 0 which extend from the outside to a cylindrical threaded hole η provided in the bolt end. In this expandable nut thread a conical guard bolt is screwed in. As a result, the nut thread is deformed in such a way that it clings tightly to the thread of the pin and cooperates with this thread exactly as if similar threads had been present from the start. The force occurring here secures the conical threaded pin against automatic loosening, while the automatic loosening of the nut p is prevented by the widening, widening or thickening of the bolt outside the screw nut which gradually increases towards the end.

Ρλτεντ pressure:

Screw locking with tapered locking pin screwed into the slotted bolt end, characterized in that cylindrical nut thread (s) is provided for the tapered pin thread (m) in the slotted bolt end, whose cooperation with the pin thread deviating from it only due to its deformation occurring when the locking pin is screwed in is made possible in such a way that in this case between the nut thread and the pin thread there is increasing friction against the free end of the bolt, which also secures the locking pin against automatic loosening. -.-., ■■

1 sheet of drawings.