FIELD: soil or rock drilling.
SUBSTANCE: group of inventions relates to a system for fixing tools for earthworks on earth moving equipment. Fixation system of the working tool contains a core having an elongated chute and a collar of the fastener dividing the elongated chute into a first portion and a second portion, a fastener located in the elongated gutter and passing through the collar of the fastener, while the fastener has a transverse stop located in the first section and a threaded shank, located in the second section, an elastic element located between the transverse stop of the fastener and the collar of the fastener, and a slider inserted into the threaded engagement with the threaded shank. Slider is made with the possibility of moving within the second section of the elongated groove during rotation of the fastening element. In addition, the slider contains at least one protrusion extending in the axial direction to the collar of the fastener, and the collar of the fastener has a cutout that allows the at least one protrusion to pass.
EFFECT: technical result – ensuring the required force of the connection and the degree of tension of the fastener after assembly.
9 cl, 4 dwg
