Claims
- 1. A turning mechanism for the movement of heavy ladles in steel mills comprising
- a rigid vertical shaft fixed by its lower extremity on a structure and having an upper extremity,
- a turning assembly mounted for turning around the rigid vertical shaft, and comprising:
- a tubular vertical element surrounding the rigid vertical shaft and mounted for turning around the shaft,
- a first bearing for supporting the turning assembly and disposed appreciably at the lower extremity of and positioned between the tubular vertical element and the rigid vertical shaft,
- a second bearing at the upper extremity of the rigid vertical shaft, and forming a support bearing supporting the weight of the turning member,
- a head on top of and connected to the tubular vertical element, the head supporting by pivots, two arms in the form of diametrically opposed forks mounted in a pivoting fashion for receiving a casting ladle,
- means for pivoting said arms and including jacks supported by the tubular vertical element and extending obliquely between the arms and the tubular vertical element,
- drive means for rotating the tubular vertical element and disposed near the lower extremity of the tubular vertical element.
- 2. A mechanism according to claim 1 in which the drive means comprises a toothed ring fixed to and encircling the tubular vertical element at a location under a casting floor and jack means for turning the ring to rotate the tubular vertical element.
- 3. A turning mechanism according to claim 2 in which the jack means comprises a hydraulic jack.
- 4. A mechanism according to claim 2 in which the toothed ring comprises two spaced apart ring portions arranged one above the other.
- 5. A mechanism according to claim 2 which further comprises two pressure sources for supplying the jack means, one being of relatively high volume and low pressure to provide a relatively rapid stroke, and the other being of relatively high pressure and low volume to provide a slow stroke and which is reliable to turn the tubular vertical element even in the case of damage to the bearings.
Priority Claims (2)
Number |
Date |
Country |
Kind |
73.23253 |
Jun 1973 |
FR |
|
74.20103 |
Jun 1974 |
FR |
|
Parent Case Info
This is a division, of application Ser. No. 482,638, filed June 24, 1974, now U.S. Pat. No. 3,942,650.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1,925,159 |
Nov 1970 |
DT |
Divisions (1)
|
Number |
Date |
Country |
Parent |
482638 |
Jun 1974 |
|