Crane Steel Making Four Rope Grab

I. Profile

Four rope grab mainly used with two sets of lifting drum bridge or gate crane machine, for grabbing all kinds of loose accumulation, loading, unloading, Turn heap loading, etc. According to the situation of grab material and user's needs, we can design the form with teeth, parallel beam opening and underwater operation.

II. Working Principle

Every kind of crane with two group of motor hoist, and each group motor hoist lead two wire ropes. They make one group wire ropes rooted in the balance frame for supporting; another group of wire rope passes the up beam pulley and the down beam pulley, composite a pulley block as open and close grab bucket.

When the work is begin, wire rope is support to lift the grab bucket in a proper place, and then shut down the support rope, rely on the dead weight of the down beam forced the down beam big shaft as center open the grab body, when the two ear plates' touch piece smash together, the grab body part open maximally. When opening the grab bucket, the up beam pulley and down beam pulleys’ center distance increase. Then the support rope put down, the opened grab bucket fall on the captured materials above, and packed around the open and close rope, the up beam pulley and the down beam pulleys' center distance return to its original position. Thus complete the capture the grab materials process. At the last, lifting open and close rope and support rope at the same time, the whole grab bucket is lifted, according to the crane, move the grab bucket to the discharge yard, unloading the materials.

III. Technology Parameters

Note: All dimensions and parameters provided by this catakog are just for reference. The real size depends on actual product. We divide types of four rope grab as per different kind of materials for the convenience of customer to choose right type on base of their practical requirement.

IV. Required information for four rope grab for crane

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