Striking power by preventing leakage into air friction coefficient of reduction and improve internal circular cylinder architecture of a pile driver

摘要

More particularly, the present invention relates to a cylinder structure of an internal circulation type airbag that improves a hitting force by preventing friction coefficient reduction and air leakage, and more particularly, The piston 320 is formed in the cylinder 310 so that one end of the piston 320 is connected to the driving part 200 of the driving part 200, A groove 333 formed at the lower portion of the piston 320 and fitted with a packing 331 around the outer periphery of the piston 320 is formed to be sloped inwardly and a striking bundle 330 spaced apart from the piston 320 is formed. And a compression space g1 is formed between the piston 320 and the striking bundle 330. When the striking bundle 330 is moved downward, the packing 331 is inclined at an inclined end portion of the groove 333, Lt; RTI ID = 0.0 333a & The friction coefficient of the cylinder 330 and the cylinder 310 and the air resistance of the batting bundle 330 are reduced and when the batting bundle 330 is moved upward, the packing 331 is moved to the inclined starting portion 333b So that the air in the compression space g1 can be sealed without being leaked. Therefore, it is possible to manufacture the compressor in a small scale and a structure for maintaining a separate balance through a small stroke distance is not required, Which is a useful invention for providing a cylinder structure of an anti-tackle which has a reduced friction coefficient and an air leakage which can have the same effect as that of the anti-