| 摘要 |
The invention relates to a device for gripping materials which, while still having a degree of cohesion, help in the penetration of a drilling body. It is characterised in that it comprises a tool 9: -on the one hand, composed of at least two generally helicoidal coaxial windings 10, having non-touching turns and having the same sense, made of at least semi-rigid wire, these windings 10 having substantially the same envelope, which is compatible with the size of the clod of material to be seized and, - on the other hand, at one 11 of its ends which is associated with an element 12 which, by a reversible means, is controlled, at least in rotation about the longitudinal axis 13 of the windings, whereas, at its other end 15, the ends 17 of the windings 10 are free and are located generally in the same plane orthogonal to the rotation axis 13 where they form the active parts 16 of the tool. Application to the industry of handling equipment. <IMAGE>
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