| 摘要 |
A hydraulic breaking hammer (10) comprises a machine housing (11) in which an impact piston (17) moves reciprocatingly. The breaking tool (18) is carried releasably in a tool part (16) fitted on the forward part of the machine housing (11). A transverse slot (23) intersects the cylinder bore (12) in the machine housing (11) outside forwardly located impact-piston hydraulic seals and forms mutually opposing, forwardly directed sidewall parts (22) on the machine housing (11). The tool part (16) has located rearwardly thereon a head (17) which is insertable into the lateral slot (23) between the sidewall parts. The head (17), and therewith the tool part (16), can be locked in this position to the machine housing (11) with the aid of retainers (26, 27) insertable in coaxial lateral bores (19, 20) in the sidewall parts (22) and in the head (17). The head (17) has impact-damping plastic bushes (29) which fit around the retainers (26, 27), and the transmission of impact forces from the head (17) to the machine housing (11) is prevented by virtue of a gap (40) at the bottom of the lateral slot (23). |
