Electric mechanical rope grapple clamshell grab for crane and
excavator
Product description
Grabs are divided into four types according to different working
principles, mechanical grabs, electric hydraulic grabs, wireless
remote control hydraulic grabs and electric motor grabs. Each type
of grab has its own characteristics and product advantages.
Mechanical grabs are further divided into four-rope grabs,
double-rope grabs and single-rope grabs. Lifting single rope grabs
cannot be open and close in the air.
The electric hydraulic grab adopts electric and hydraulic
mechanical techniques for large grabbing forces and high
automation;and the product is an ideal and unload tool for large
materials!
Electro-hydraulic grabs is controlled by remote, and it can open and
close at any position in the air. The opening is controlled by hydraulic pressure, and the closing is
by its own gravity.
Electric motor grabs has open and close structure, it can load and
unload the material at any position, so the productivity is higher
than single rope grab.
Advantage
1) Simple structure ,easy in installation and maintain.
2) Adopting advanced world famous brand components in electric
parts and operation parts.
3) with the great abrasive resistance, high strength and can grab
the material very well.
4) Running in a high authorization and internationalization,no
pollution
5) Widely used in Wharf, steel mills, power plants, ships, etc.
Parameter
| Crane lifting capacity | t | 5,0 | 6,3 | 8,0 | 10,0 | 12,5 | 16,0 | 20,0 | 25,0 |
| Grab capacity | m³ | 3,2 | 4,0 | 5,0 | 6,3 | 8,0 | 10,0 | 12,5 | 16,0 |
| Number of shells | | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Dead weight | open | t | 3,07 | 3,87 | 4,88 | 6,10 | 7,56 | 9,68 | 12,0 | 15,0 |
| half-open | t | 3,10 | 3,90 | 4,92 | 6,15 | 7,62 | 9,76 | 12,1 | 15,1 |
| closed | t | 3,15 | 3,97 | 5,00 | 6,28 | 7,75 | 9,92 | 12,3 | 15,4 |
| Dimensions | A | mm | 2800 | 3000 | 3250 | 3530 | 3840 | 4100 | 4460 | 4720 |
| B | mm | 2920 | 3120 | 3460 | 3730 | 3960 | 4250 | 4800 | 5120 |
| C | mm | 2600 | 2810 | 3060 | 3220 | 3510 | 3780 | 4190 | 4520 |
| D | mm | 4060 | 4380 | 4720 | 5060 | 5460 | 5770 | 6190 | 6750 |
| a | mm | 300 | 380 | 480 | 480 | 480 | 595 | 590 | 670 |
| b | mm | 650 | 780 | 900 | 900 | 900 | 1000 | 1300 | 1300 |
| Closing rope stroke 5-fold | mm | 6500 | 5350 | 6400 | 7475 | 7350 | 7004 | 7560 | 8520 |
| Standard diameter of closing ropes | mm | 14 | 18 | 22 | 22 | 16 | 28 | 28 | 32 |
| Closing rope-total length to operate | m | 12.5 | 11,7 | 13.5 | 13,2 | 16 | 16 | 14.5 | 18.5 |
| Dianmeter of closing rope sheaves | mm | 280 | 355 | 450 | 450 | 450 | 560 | 560 | 630 |
Application:
It has been widely used in ports,steel plants,power stations,ships
and garbage treatment,plants, and is used together with tower
cranes,ship cranes,ship unloaders,traveling cranes and other type
of cranes.The grab has its own hydraulic system,the key elements of
which are of recognized brand imported abroad which ensure the high
performance of the grab.
