FELD-DELTA - the motor clamshell grab
The best choice for bulk materials, such as ore, coal, sand.
DESIGN
| ◾ | Crossbeam with compact electro-hydraulic drive unit |
| ◾ | Working cylinders drive jaws directly |
| ◾ | Pair of jaws with synchronization lever |
| ◾ | Optimum usage of lift height thanks to low construction height |
| ◾ | Shell construction relieved of large cylinder forces by force guides |
| ◾ | At the same time, the force guides form protected mounting space for the cylinders |
| ◾ | Grab cutting edges with welded-on, service-friendly, wear-resistant Bofors profiles |
Drive unit
Driven by three-phase AC or DC motor. The electric motor is switched via a reversing contactor and opens and closes the jaws electro-hydraulically depending on the direction of rotation. Reliable switching processes; control is carried out without solenoid valves. Overload protection through self-regulating hydraulics. Low overall height, compact construction. Secure retention of loads even in the case of a power failure, thanks to check valves.
Working cylinders
GHigh clamping force and high opening speed thanks to differential cylinders driving the jaws directly. Thanks to a special installation position, the cylinder is protected from damage on all sides. Corrosion-resistant piston rod thanks to special chrome-plating.
Jaws
The jaws are interchangeable. Various shapes and sizes allow tailoring to the respective load. High degree of filling thanks to favorable top ratio. Robust design for low unladen weight. Long service life thanks to use of fine-grain structural steel and wear-resistant cutting edge sections.
Pivots
All pivots are designed to be low-maintenance. Jaw synchronization with synchronization lever for clamshell grab. For the orange-peel grab, the jaws close independently of one another.
Technical data, DELTA N standard grab
| Size | Shell capacity m³ | Bulk density t/m³ | Unladen weight kg | Drive power kW |
|---|---|---|---|---|
| DH 2 K 0 | 0,32 - 0,80 | 1,0 - 3,6 | 480 - 585 | 5 |
| DH 2 K 1 | 0,63 - 2,00 | 1,0 - 3,6 | 960 - 1320 | 12 |
| DH 2 K 2 | 1,00 - 3,20 | 1,0 - 3,6 | 1360 - 1950 | 15 |
| DH 2 K 3 | 1,60 - 5,00 | 1,0 - 3,6 | 2230 - 3070 | 24 |
| DH 2 K 4 | 2,50 - 8,00 | 1,0 - 3,6 | 3170 - 4175 | 30 |
| DH 2 K 5 | 4,00 - 12,50 | 1,0 - 3,6 | 5400 - 9000 | 48 |
| DH 2 K 6 | 5,00 - 20,00 | 1,0 - 3,6 | 9500 - 12000 | 54 |
Technical data, DELTA U underwater grab:
| Size | Shell capacity m³ | Bulk density t/m³ | Unladen weight kg | Drive power kW |
|---|---|---|---|---|
| DH 2 K 0 U bis DH 2 K 6 U |
0,32 - 20,00 | 1,0 - 3,6 | 480 - 12000 | 5 - 54 |
Technical data, DELTA B on-board grab:
| Size | Shell capacity m³ | Bulk density t/m³ | Unladen weight kg | Drive power kW |
|---|---|---|---|---|
| DH 2 K 0 B bis DH 2 K 6 B |
1,00 - 20,00 | 1,0 - 3,6 | 1360 - 12000 | 15 - 54 |
Technical data, DELTA M refuse grab:
| Size | Shell capacity m³ | Bulk density t/m³ | Unladen weight kg | Drive power kW |
|---|---|---|---|---|
| DH 2 K 0 M | 0,40 - 0,80 | - - - - | 525 - 625 | 5 |
| DH 2 K 1 M | 1,00 - 1,60 | 350 - 400 | 1050 - 1120 | 12 |
| DH 2 K 2 M | 2,00 - 3,20 | 500 - 1250 | 1470 - 1830 | 15 |
| DH 2 K 3 M | 4,00 - 6,30 | 1000 - 2600 | 2730 - 3180 | 24 |
| DH 2 K 4 M | 8,00 | 2000 - 3200 | 3880 - 3920 | 30 |
Technical data, DELTA F cargo grab:
| Size | Shell cross section m² | Safe working load kg | Unladen weight kg | Ultimate crane load t |
|---|---|---|---|---|
| DH 2 K 0 F | 0,33 - 4,00 | 0,8 - 5,5 | 500 - 3150 | 5 - 30 |
| DH 2 K 4 F | - - - - | - - - - | - - - - | - - - - |
Additional equipment
| ◾ | Wipers in the jaws to eject adhesive material such as clay and loam. |
| ◾ | Grab shells and rubber profile seal or tightly closing profile cutting edges for capturing free-flowing loads such as soda, phosphate, cement, and cereals. |
| ◾ | Shell cover for powdery materials such as phosphate, cement, cereals, fine coal, etc. Here, special measures are taken (wind protection) to protect the grabs against loss of materials; this makes the grabs particularly environmentally friendly. |
| ◾ | 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. |
| ◾ | Heat protection for electrics and hydraulics, for use in hot working environments. |
| ◾ | Full motor protection to prevent overheating of the motor |
| ◾ | Tilt switch to prevent tipping when the grab is out of the crane driver's range of vision |
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 |