HAMMERING NOISE CUTOFF IN PILE DRIVING HAMMER

摘要

The striking noise canceling device of the Pile driver is disclosed. Isolating device of the present design are installed to upper and lower movement is possible on the ram housing, the housing and the ram comprises a ram which strikes the drive cap capped on the top of the file to a free fall from top to bottom. And it is disposed to extend to the open bottom of the ram housing, the extension tube to cover the drive cap has a receiving chamber for the wrap; It is provided along the inner wall of the storage chamber periphery of the extension tube, and a sound absorbing member which shields, absorbs the 800 Hz generated when the ram hits the drive cab. And the inner wall of the storage chamber of the extension tube is provided along the sound absorption chamber with a sound-absorbing member to be accommodated the circumference. According to the present design, it is possible, but having an extension tube which can surround the drive cap at the top of the file, since the sound absorbing members to the inner peripheral surface of the peripheral to RAM is effectively shielded by the 800 Hz generated in the course of hitting the drive cab. In particular, the occurrence can be effectively shielded by the generated hitting noise is 800 Hz and can be prevented from being discharged to the outside, and thus can give to reduce the impact noise. In addition, because it is Sikkim by reducing the impact of noise to improve the working environment as well as has the effect of improved reliability of the product.