Electric motor grabs are commonly used in various multi-purpose cranes, with their own opening and closing mechanism, which can load and unload materials at any height. The productivity is higher than the single-rope grab, easy to use and disassemble, and high in loading and unloading power. Suitable for grabbing all kinds of loose objects. When using this grab, add a cable reel to transmit energy according to the lifting height. Note: This grab cannot be operated underwater.
It is equipped with an opening and closing structure and usually uses a standard electric hoist. This kind of grab bucket can be hung on the crane hook and raised and lowered by the lifting mechanism. Its characteristic is that the operation is more convenient than the single-rope grabbing bucket, the grabbing performance is better, the productivity is higher, but the dead weight is larger, and the cable for the opening and closing mechanism is required. With the development of hydraulic transmission, hydraulic motor grabs have appeared, which are gradually popularized because of their compact structure. In special cases, a pneumatically driven grab is also used.
The electric motor grab itself has a closing mechanism, and it has a variety of styles. It is a standard electric hoist or hoists mounted on the grab as an opening and closing mechanism. The motor grab can be seen as moving the ratio and reel to the grab itself. Since the motor grab is no longer subjected to the upward pulling force of the closed rope like a four-rope grab when it is closed, the grab’s own weight all plays a role in digging. Because of its large grabbing capacity, it is most suitable for grabbing ore materials.
It is mostly used for loading and unloading loose grained materials such as mine stone, limestone, slag powder, coal, coke, etc. Cannot operate underwater.
Outdoor work, pay attention to rainproof facilities
Prohibition of underwater operations
It is forbidden to work inflammable, explosive and environment
It is forbidden to work in acid, alkali vapor, environment
Model | Volume | Type | The diameter of steel rope mm | |||||
The rate of material t/m3 | The Diameter of pulley mm | Power | Grab self- weight | Using Crane ton | ||||
ZD15 | 1.5 | Heavy | ≤2 | ɸ15 | ɸ350 | 15 | 2.9 | 5 |
ZD20 | 2 | Heavy | ≤2 | ɸ15 | ɸ350 | 18.5 | 3.6 | 10 |
ZD25 | 2.5 | Heavy | ≤2 | ɸ16 | ɸ400 | 22 | 4.4 | 10 |
ZD30 | 3 | Middle | ≤1.2 | ɸ16 | ɸ400 | 22 | 4.68 | 10 |
ZD60 | 6 | Light | ≤1 | ɸ16 | ɸ400 | 22 | 5.6 | 15 |
ZD10 | 1 | Heavy | ≤2.5 | ɸ15 | ɸ350 | 11 | 2.8 | 5 |
ZD50 | 5 | Light | ≤1 | ɸ17.5 | ɸ400 | 22 | 4.1 | 10 |