FELD-SIGMA - the multi-rope clamshell grab
The rope grab for ports an incinerators.
DESIGN
| ◾ | Low unladen weight and high jaw strength through use of hollow profiles |
| ◾ | Optimum degree of filling through favorable digging arc |
| ◾ | Balanced ratio of shell width to grab width (top ratio) |
| ◾ | High closing force through multiple-reeved block and tackle |
| ◾ | Use of star rope sheaves for rope inlet reduces wear on closing ropes, significantly extending service lives |
Technical data, SIGMA
| Size | Shell capacity m³ | Bulk density t/m³ | Unladen weight kg | Ultimate crane load t |
|---|---|---|---|---|
| D 21 S 1 | 0,63 - 3,20 | 0,60 - 3,20 | 1200 - 1300 | 3,2 |
| D 21 S 2 | 0,80 - 4,00 | 0,60 - 3,20 | 1400 - 1500 | 4,0 |
| D 21 S 3 | 1,00 - 5,90 | 0,60 - 3,20 | 1750 - 1900 | 5,0 |
| D 21 S 4 | 1,25 - 6,30 | 0,60 - 3,20 | 2200 - 2400 | 6,3 |
| D 21 S 5 | 1,60 - 8,00 | 0,60 - 3,20 | 2800 - 3000 | 8,0 |
| D 21 S 6 | 2,00 - 10,00 | 0,60 - 3,20 | 3500 - 3800 | 10,0 |
| D 21 S 7 | 2,50 - 12,50 | 0,60 - 3,20 | 4400 - 4800 | 12,5 |
| D 21 S 8 | 3,20 - 16,00 | 0,60 - 3,20 | 5600 - 6000 | 16,0 |
| D 21 S 9 | 4,00 - 20,00 | 0,60 - 3,20 | 7000 - 7500 | 20,0 |
| D 21 S 10 | 5,00 - 25,00 | 0,60 - 3,20 | 8800 - 9300 | 25,0 |
| D 21 S 11 | 6,30 - 32,00 | 0,60 - 3,20 | 11200 - 11700 | 32,0 |
Additional equipment
| ◾ | Guide rollers and a gimbal to protect the rope when the grab is used predominantly in a slanting position |
| ◾ | Roller bearings for the rope sheaves (maintenance-free) |
| ◾ | Rubber gasket on the cutting edges or tightly closing profile cutting edges, recommended for loading free-flowing materials such as soda, phosphate, cement, and cereals. |
| ◾ | Shell covers for powdery materials such as phosphate, cement, cereals, fine coal, etc. Here, the grabs are fitted with wind protection so that no material can be lost during gripping; this makes the grabs particularly environmentally friendly. |
| ◾ | Heavy-duty shell design for operation in rough conditions such as in smelting works or foundries and with coarse, hard-to-grab loads. |
| ◾ | Heavy-duty push rods, e.g., for unloading ships, to protect against frequent impacts with hatch edges, gangways, etc. |
| ◾ | Plug-in teeth on the grab's cutting edges for secure grip on coarse and hard-to-grip materials. For breaking open hard surface layers. The teeth are inserted into sleeves and are easily replaced. |
| ◾ | Steel rope sheaves for use in hot working environments, e.g., smelting works, foundries, etc. |
Other grippers from our range:
Sophisticated technology, first-rate quality: We offer you the ideal solution for you, depending on your performance, handling and local conditions.
Contact to FELD
Maschinen- und Industriebau FELD GmbH
Winkelfeld 3-7
D-45739 Oer-Erkenschwick / GERMANY
| Phone: | +49 (0) 2368 / 98 89-0 |
| Fax: | +49 (0) 2368 / 98 89-27 |
| E-Mail: | info@maschinenbau-feld.de |