| 摘要 |
A fluid operated hammer (1) comprises a casing (2, 25), a main piston (6, 23) reciprocable in the casing, a secondary piston (8, 22) reciprocable in the casing separately from the main piston, an inlet (10, 28) into the casing for admitting a pressurized fluid therethrough, and an outlet (11, 33) from the casing separable from the inlet by one of the pistons. An energy storage compartment (9, 37a) is provided in communication with a face of one of the pistons; and the pistons being relatively movable between connected and separated positions to allow the pressurized fluid to sequentially supply energy to the storage compartment and release this energy to operatively drive the piston providing the hammer surface. |
