Undercutter self adjusting and shock absorbing device

摘要

A self adjusting chain mechanism for use with an undercutter attached to an excavator having hydraulic means for adjusting the undercutter; the self adjusting mechanism has a chain and sprocket assembly in a sprocket holding frame, a ram and piston, all operating in conjunction with the hydraulics of the excavator with a control system to move an adjuster shaft connected to the chain sprocket assembly, so as to cause the chain to tighten in response to the changes in hydraulic pressure.

主权项

1. An undercutter selfadjusting chain mechanism for providing chain tension adjustment during use to keep tension near a desired level, and where the undercutter is attachable to an excavator or other mobile equipment having hydraulic means for moving the attached undercutter, said mechanism comprised of:
a. an undercutter having a rigid elongated bar, said bar having a first end and an opposite distal end, where the said two opposite ends form a longitudinal axis between them; b. two rotatable sprockets, one a distal end sprocket at the distal end, and a corresponding sprocket at the opposite end of the bar; c. a continuous chain moving about the bar and guided by the two sprockets; d. means for allowing the sprocket at the distal end to move longitudinally while rotating; e. hydraulic force means for moving the distal sprocket in a longitudinal direction automatically during use in response to changes in chain tension.