AT25517B - Rotary crane with fixed central column. - Google Patents
Rotary crane with fixed central column.Info
- Publication number
- AT25517B AT25517B AT25517DA AT25517B AT 25517 B AT25517 B AT 25517B AT 25517D A AT25517D A AT 25517DA AT 25517 B AT25517 B AT 25517B
- Authority
- AT
- Austria
- Prior art keywords
- fixed central
- central column
- foundation
- rotary crane
- base
- Prior art date
Links
Landscapes
- Jib Cranes (AREA)
Description
<Desc/Clms Page number 1>
Drehkran mit feststehender Mittelsäule.
EMI1.1
in dieser Weise zu lagern, da die auf das Fundament wirkenden Kräfte zu gross werden.
Fig. 2 zeigt die Befestigung eines Königstockes in einem mit dem Fundament fest verankerten gusseisernen oder schmiedeeisernen Stern. It dieser Konstruktion wirken infolge des Kippmomentes Zug- und Druckkräfte auf das Fundament ein. Um diese auf das Fundament wirkenden Kräfte zn vermeiden, ging man bei kleinen Kranen schon dazu über, den Stern so gross auszubilden, dass keine Zugkriifte im Fundament auftraten. In diesen Fällen wurde aber stets ein schmiedeeiserner Königstock in einen Fnndamentstern eingesetzt.
Die vorliegende Erfindnng bezweckt nun, alle Zugkräfte auf das Fundament zu vermeiden, und zwar ohne Anwendung eines Fundamentsternes. Zu diesem Zwecke wurde der Konigstock bezw. die feststehende Mittelsäule aus einer Eisenkonstruktion hergestellt, deren untere Basis so gross gehalten ist, dass nur Druckkräfte und keine Zuglrräfte auf das
EMI1.2
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Rotary crane with fixed central column.
EMI1.1
to be stored in this way, as the forces acting on the foundation are too great.
Fig. 2 shows the attachment of a king stick in a cast iron or wrought iron star firmly anchored to the foundation. With this construction, tensile and compressive forces act on the foundation as a result of the tilting moment. In order to avoid these forces acting on the foundation, in the case of small cranes one went over to making the star so large that no tensile forces occurred in the foundation. In these cases, however, a wrought-iron king stick was always inserted into a foundation star.
The present invention now aims to avoid all tensile forces on the foundation, without using a foundation star. For this purpose the Konigstock was respectively. The fixed central column is made of an iron construction, the lower base of which is so large that only compressive forces and no tensile forces on the
EMI1.2
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT25517T | 1905-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT25517B true AT25517B (en) | 1906-08-25 |
Family
ID=3536295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT25517D AT25517B (en) | 1905-06-19 | 1905-06-19 | Rotary crane with fixed central column. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT25517B (en) |
-
1905
- 1905-06-19 AT AT25517D patent/AT25517B/en active
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