VIBRATORY PILE DRIVER THAT REDUCES BREAKAGE DUE TO VIBRATORY PILE DRIVING

摘要

The present invention relates to a vibratory pile driver that reduces breakage due to vibratory pile driving, the vibratory pile driver comprising: a rotary support frame coupled to a boom of a construction machine; a main frame rotatably supported by the rotary support frame; a vibration main body which is tiltably mounted on the main frame and generates vibrations via a vibrating hydraulic motor operated using working oil provided from the construction machine; a tilting driving hydraulic motor which is fixed to the main frame and connected to the vibration main body, and operates using the working oil provided from the construction machine, to tilt the vibration main body; and a pile chuck provided at the lower portion of the vibration main body so as to chuck a pile. According to the present invention, during vibratory pile driving by the vibration main body, there is no risk of breakage of the components of the tilting driving hydraulic motor as an actuator for tilting the vibration main body, including a driving shaft, due to the pile driving force, and thus, durability is excellent. By enabling tilting of the vibration main body even if a vibration motor is constituted as a single unit, imbalance between the two sides of the vibration main body is eliminated even with long time use or use in harsh environments, thus increasing the reliability of the tilting operation of the vibration main body. By tilting the vibration main body by the rotational force of the tilting driving hydraulic motor, the components required for the transmission of the driving force for tilting the vibration main body are minimized, thereby simplifying the structure, and thus, the costs required for not only manufacturing but also maintenance and repair can be reduced.