| 摘要 |
<p>A hydraulic hammer comprising a casing (1) with annular recesses (13, 14, 15, 16), a face cover (4), a piston-striker (2) with a control annular recess (3), and idle stroke chamber (9) and working stroke chambers (10, 11), a distributor valve (12), hydraulic accumulators (6) and (8), a working instrument (5). At the moments of increase of the working or idle stroke of the piston-striker (2) beyond its nominal value a possibility of interconnection of the drain (14) and pressure (16) recesses of the casing (1) is provided, and the hydraulic accumulators are shaped as toroids concentrically embracing the casing (1) of the hydraulic hammer.</p> |
