| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an impact prevention control method and impact prevention control device of the bucket cylinder of a loading shovel for preventing the damage of a link for bucket angle detection due to the influence of sediment. <P>SOLUTION: The impact prevention control device includes an arm angle detector 30 for detecting the arm rotary angle of an arm 12 with respect to a boom 7. A cylinder angle detector 31 for detecting the rotary angle of the bucket cylinder 20 is arranged in the neighborhood of the connection part of the bucket cylinder 20 to the boom 7. From the rotary angle of the bucket cylinder 20 detected by the cylinder angle detector 31, its increase/decrease signal, the arm rotary angle detected by the arm angle detector 30, and a signal showing an operation direction showing which of an extension direction and contraction direction is the bucket cylinder 20 being operated in, the rotary position of the loading bucket 17 is detected. <P>COPYRIGHT: (C)2013,JPO&INPIT |
