PURPOSE: To provide the title mechanism intended to improve sensing accuracy, so designed that a sensing section to make a hydraulic control of machine body attitude by sensing the vertical motion and rolling of a float is provided and an adjuster section and the sensing section are installed in the front of the machine body before the engine.
CONSTITUTION: A main sensing section 18 is actuated when a float is set to being in vertical motion and when an hydraulic valve 32 interlocked with a main sensing rod 17 comes beyond a specified neutral position, a main cylinder 28 is actuated and swing wheels 6 are set to being in vertical motion simultaneously, thus making a vertical control of machine body height. Since an adjuster section 7 fitted with the float so as to be free to make vertical and rolling motion is installed in the front of the machine body in the same way as with the sensing sections 18, 22, the movement of the float can be sensed directly, leading to facilitating such regulatory means as setting the neutral position for the hydraulic valve 32, thus further improving sensing accuracy.
FUNO TAKASHI
YOKOYAMA YOSHIKI
