| 摘要 |
Hydraulic breaker hammer comprising a housing ( 10 ) with a longitudinal bore ( 12 ), a cylinder sleeve ( 14 ) mounted in the bore ( 12 ), a hammer piston ( 15 ) sealing guided in the cylinder sleeve ( 14 ), a guide sleeve ( 21 ) located in the front end portion of the bore ( 12 ) for receiving a working implement, and a rear end cover ( 16 ) forming a closure for the rear end of the bore ( 12 ). The rear end cover ( 16 ) comprises a tubular neck portion ( 17 ) which is formed integral as a one piece member with the end cover and which extends into the bore ( 12 ). The neck portion ( 17 ) forms a guide means for the hammer piston ( 15 ), and the bore ( 12 ) having an axially facing annular shoulder ( 18 ), wherein the cylinder sleeve ( 14 ) is supported in a correct operating position between the shoulder ( 18 ) and the end cover neck portion ( 17 ). |
