Double Rope Grab Bucket

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Double Rope Grab Bucket Working Principle

Double rope grab suitable for double hoisting device structure (single ropes) of all kinds of crane, almost use in port and dock, construction bridge, etc. According to the material properties can be used for light, medium, heavy and supper-heavy. For capturing all kinds of loose debris.

In all kinds of crane, with two group of Motor drum (the electric hoist), each group of motor drum leads one wire rope, one wire rope in balance crane for supporting, and the other rope pass the up beam pulley and the down beam pulley, composite a pulley block as opening and closing the grab bucket.

Work beginning, support wire rope will lift the grab bucket in well 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 maximum. When opening the grab bucket, the up beam pulley and down beam pulleys center distance increase. And 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 completing the capture the grab materials process. In 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.

Double Rope Grab Bucket Coiling Schemes

Double Rope Grab Bucket Technical Specifications

Model Volume (m3) The rate of material (t/m3) The Dia.of pulley (mm) The Dia.Of steel rope (mm) Using crane ton(t) Grab self weight (t)
S0307 0.75 ≤1.7 260 13 3 1.15
S0510 1 ≤2.0 360 16 5 2.1
S0512 1.2 ≤2.5 445 20 5 2.3
S0515 1.5 ≤1.6 400 18 5 1.95
S0520 2 ≤1.5 445 20 5 2.2
S0525 2.5 ≤1.0 445 21.5 5 2.3
S0530 3 ≤1.0 445 24 5 2.3
S0825 2.5 ≤2.0 560 28 8 3.3
S1023 2.3 ≤2.5 650 28 10 3.8
S1025 2.5 ≤2.0 650 28 10 4.3
S1030 3 ≤2.0 560 28 10 4
S1050 5 ≤1.0 560 28 10 4.2
S1060 6 ≤0.9 560 28 10 4.3
S1225 2.5 ≤2.5 560 28 12.5 5.2
S1635 3.5 ≤2.6 720 32 16 6.5
S1670 7 ≤1.2 650 28 16 7
S2035 3.5 ≤2.3 650 28 20 12
S2050 5 ≤2.2 650 32 20 7.5
S2560 6 ≤2.8 720 34 25 8.5
S2515 15 ≤0.9 720 32 25 10.5
S3212 12 ≤1.8 880 36 32 11

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