Tightening member, tightening device, jaw crusher, processing plant of mineral material and method for adjusting tightness of wear part

摘要

In the method for adjusting the tightness of a wear part (107, 107', 108, 108') fastened to a fixed jaw (101 ) and/or a moving jaw (102) of a jaw crusher (100) with a tightening device (10) that comprises a screw (11) fastened at its first end (11 ') in connection with a wear part located on a first side of the jaw; and a tightening member (17) fastened to a second end (11") of the screw on a second side of the jaw; and a spring (15) arranged between the jaw and the tightening member; the spring is compressed or decompressed with the tightening member; the spring (15) is influenced by at least two moving screws (18) supported by a frame of the tightening member (17); and the length of the spring is changed by rotating said at least two moving screws. Tightening member (17). Tightening device (10). Jaw crusher (100). Processing plant of mineral material (200).