Greifer

A pincer grab (1), comprising: a frame (2) with attaching means for coupling to a hoisting device; two jaws (3,4) carried by that frame (2) pivotably round mutually parallel horizontal centre lines (5,6), which jaws (3,4) have complementary edges facing one another and which can together form a grab; a hydraulic drive cylinder (7) with coupling means (38,39) for coupling to a controllable source for medium under pressure, the ends of which drive cylinder (7) are coupled by means of two more or less U-shaped coupling members via pivot joints to two respective pairs of transmitting arms (10), each connected to a jaw; and transmission means arranged between the drive (7) unit and the jaws (3,4); wherein the disposition is such that through suitable energizing of the drive unit (7) the jaws (3,4) can be moved between the closed position, wherein they together form a grab, and an open position. The invention has for its object to embody a pincer grab such (1) that no residual stresses can be present in the transmission means. For this purpose the pincer grab (1) according to the invention has the feature that each coupling member comprises a block (31,32) coupled to the relevant end of the cylinder (7), to which block (31,32) are fixed two rods (34-37) forming the legs of the U.