DE120247C

DE120247C -

Info

Publication number: DE120247C
Application number: DENDAT120247D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die vorliegende Erfindung ist aus dem Bestreben hervorgegangen, eine Vorrichtung zu schaffen, die das selbstthätige Anhalten der Aufzugsmaschinen beim Bruche eines Seiles oder Eintreten sonstiger Betriebsstörungen, ebenso wie beim normalen Betriebe bei Erreichung der vorgeschriebenen Förderhöhe unter allen Umständen sicher bewirkt. . Die jetzt zu diesem Zwecke benutzten Einrichtungen sind meist aus so viel Theilen zusammengebaut, dafs die Möglichkeit des Versagens irgend eines derselben sehr grofs ist, denn mit der Anzahl der Einzeltheile der Sicherheitsvorrichtungen mehren sich naturgemäis auch die Ursachen von Störungen. Abgesehen davon, dafs man in Gebäudeneubauten den Aufzugsmaschinen fast ausnahmslos nur einen auf's äufserste beschränkten Raum zuweist und in schon bestehenden Bauten, bei denen die Anlage¹ einer Fahrstuhleinrichtung ursprünglich nicht vorgesehen war, der Raum ebenfalls sehr beschränkt ist, so wird der Bauherr meistens derjenigen Aufzugsmaschine den Vorzug geben, die infolge ihrer Einfachheit und Uebersichtlichkeit verspricht, unliebsame Betriebsstörungen auszuschliefsen.The present invention emerged from the endeavor to create a device which reliably stops the elevator machines automatically in the event of a cable break or other operational malfunctions, as well as in normal operation when the prescribed delivery height is reached. . The devices now used for this purpose are usually assembled from so many parts that the possibility of failure of any of them is very great, for the causes of disturbances naturally increase with the number of individual parts of the safety devices. Apart from the fact that in new buildings the elevator machines are almost without exception only allocated to an extremely limited space and in already existing buildings, in which the installation ^{1 of} an elevator device was not originally intended, the space is also very limited, the building owner usually becomes that elevator machine give preference, which, due to its simplicity and clarity, promises to exclude unpleasant operational disturbances.

In der Zeichnung stelltIn the drawing represents

Fig. ι einen Längsschnitt durch die Seiltrommel nebst Steuerscheibe und Zubehör einer Aufzugsmaschine dar.Fig. Ι a longitudinal section through the cable drum together with control disk and accessories an elevator machine.

Fig. 2 zeigt dasselbe in einer anderen Ausführungsform. Fig. 2 shows the same in another embodiment.

Fig. 3 ist ein Einzeltheil, undFig. 3 is a detail, and

Fig. 4 eine Gesammtansicht der Maschine von der Seite gesehen.Fig. 4 is an overall view of the machine seen from the side.

Auf der Welle 1 ist die' Seiltrommel 2 fest aufgekeilt und deren rechte Stirnseite so ausgespart, dafs die das Ausrücken der Maschine bewirkende Steuerscheibe 3 mit einer angegossenen, zur Hubbegrenzung dienenden Scheibe 4 in die Aussparung hineinpafst. Ein Arm 5 der Seiltrommel ist mit einer Schwalbenschwanznuth versehen, in welcher ein Anschlagstift 6 geführt wird. Mit seinem aus dieser Führung hervorstehenden Ende ragt der Stift 6 in eine in die Scheibe 4 eingeschnittene Spiralnuth. Rings um die Bohrung von 4 (Fig. 1) sind Kupplungszähne 7 angeordnet, die dazu dienen, das Ende eines in die Welle eingelassenen, in deren Längsrichtung verschiebbaren Riegels 8 zwischen sich aufzunehmen. Der Riegel 8 dreht sich mit der Trommel 2 und greift mit seiner Nase 9 in die ringförmige Nuth eines Hebels io, der für gewöhnlich in seiner Lage verharrt, aber auf dem cylindrischen Ansatz 11 des Gestellbockes 12 drehbar gelagert ist. Der Ansatz 11 ist von solcher Länge, dafs vermittelst eines in ihm eingeschraubten Stiftes 13 und einer mit schräger Nuth versehenen, am Hebel 10 befestigten Platte 14 (Fig. 3) auch eine Verschiebung von 10 in Richtung der Trommelachse möglich ist, wenn dem Hebel 10 eine entsprechende Drehung ertheilt wird.The cable drum 2 is fixed on the shaft 1 wedged and the right front side cut out in such a way that the disengagement of the machine causing control disk 3 with a cast, serving to limit the stroke Disk 4 fits into the recess. An arm 5 of the cable drum is with a Schwalbenschwanznuth provided, in which a stop pin 6 is guided. With his the end protruding from this guide protrudes the pin 6 into a cut into the disk 4 Spiral nut All around the bore of 4 (Fig. 1) are clutch teeth 7 arranged, which serve the end of a recessed in the shaft, in the longitudinal direction slidable bolt 8 take between them. The bolt 8 rotates with the drum 2 and engages with his Nose 9 into the ring-shaped groove of a lever io, which is usually in its position persists, but rotatably mounted on the cylindrical extension 11 of the frame bracket 12 is. The extension 11 is of such a length that by means of one screwed into it Pin 13 and a plate 14 which is provided with an inclined groove and is fastened to the lever 10 (Fig. 3) a shift of 10 in the direction of the drum axis is possible if the lever 10 is given a corresponding rotation.

Ein zweiter Hebel 15 sitzt lose drehbar auf der Nabe der Steuerscheibe 3 und ist mit dem Hebel 10 durch irgend eine besondere Vorrichtung verbunden, die beim Bruche eines Seiles beiden Hebeln gleichzeitig ge-. stattet, sich nach der Seite hin zu neigenA second lever 15 sits loosely rotatable on the hub of the control disk 3 and is with connected to the lever 10 by some special device which, when breaking of a rope using both levers at the same time. makes it possible to lean sideways

Claims

(Fig. 4), so be'zw on the shaft 1. on to rotate the extension 11 so that an axial displacement of one of the levers IO or 15 is initiated through the intermediary of pin 13 and plate 14.

According to Fig. 1, the lever 10 is forced to move to the right when a rope breaks and the end of the bolt 8 to bring between the teeth 7 of the disk 4.

If the machine works with only one load rope, then according to the known device the second lever 15 can be omitted. The arrangement intended for two load ropes 4 is therefore only to be understood as an example. It works in such a way that the both roles 18, 19 in normal operations assume the position shown on the load ropes, but in the event of breakage of one of the fall both ropes into the dot-dash position. The rollers 18, 19 are namely on mounted on the legs of a double-cranked shaft, the concentric end journals 20 rotate in the free ends of levers 10 and 15.

Since the cable drum continues to run at the moment of the cable break, it takes the in their hubs and the shaft 1 led bolt 8 and leads after its coupling with the teeth 7 the disk 4 together with the control disk 3 also with around. Through this the control rope is tightened, which in turn triggers the brake and stops quickly in a known manner brings about.

The device shown in FIG. 2 embodies the same design concept in FIG other shape, the use of a bolt 8 is superfluous by the at Falling down the lever occurring axial displacement here on the right seated lever 10, the coupling teeth 17 cast on its hub direct to the Brings engagement with the teeth 16 attached to the control disk hub. The other The arrangement of FIG. 2 can be easily understood by comparing it with FIG the same parts have been given the same indication marks.

In both embodiments (Figs. 1 and 2) there is also the device for preventing of the ueber or. Undershooting the funding level together.

The pin 6, which is radially displaceable in the drum arm 5, moves depending on the direction of rotation outwards or inwards. Because the spiral nut of the temporarily fixed one, which receives its cylindrical end journal Disk 4 does not allow any other movement.

If the lift limit of the elevator is almost reached, then 6 hits against one of the Limiting the course of the spiral, because it is screwed into it, pins 21, and rotates the Sheave 4 in the same way as already described, so far that the control cable the machine disengages and the brake is applied.

What principally distinguishes the described facility from known similar ones, that is the direct action of the organs initially involved in the rope break - in the present case the lever 10 - on the coupling of the drum 2 with the control disk 3 at the moment the danger, both in the event of a rope break and at the end of the stroke in normal operations.

In known devices that serve the same purpose, this is only through Much more complicated means are achieved, which are also used to accommodate them take up more space.

In contrast to this, individual mechanisms are avoided in the present device, in that the parts necessary for the transmission of motion are united in a compact form into a coherent piece are, whereby an increased operational safety of the entire system is achieved.

This part has 3, 4 in threefold to work in different ways. Firstly, it serves as a stroke limiting disk 4, secondly as a control disk 3 and thirdly it is also designed as a coupling half, which in Fig. ι is used to by inserting the bolt 8, and in Fig. 2 by pushing the lever hub 10 into the control disc in the event of a cable break Forcing the control rope to be tightened.

Sponsorship τ claim:

A control on such mechanical elevator winches, which consists of one to one common axis of rotatable rope drum, control disc and stroke limiting disc, characterized by the union of the control disk (3) and the stroke limiting disk (4), as well as the coupling half (7, 16) to a single coherent, rigid whole, for the purpose of increased operational safety and space savings to achieve.

1 sheet of drawings.