Moil chisel, to be used in mining or tunneling has wear and tear protection disc inserted horizontally between the chisel head and the upper surface of holding element

摘要

The chisel (10), comprising a shaft (14), a chisel head (11) and a tip (12), soldered to the top of the chisel head (11), is movable joined to a holding element (20). A wear and tear protection disc (30) is inserted horizontally between the chisel head (11) and the upper surface (22) of the holding element (20), which envelopes the shaft (14) of the chisel (10). The whole lower surface (13) of the chisel head (11) is supported by the disc (20), while the whole lower surface (31) of the disc (30) is supported by the upper surface (22) of the holding element (20). This arrangement results in a stable connection with little wear and tear. marks (23), positioned at the top of the holding element (20) indicate the level of abrasion.