| 摘要 |
<p>PURPOSE: To provide a device for detecting mutual position between booms of a crane without adjusting unevenness even in the case where unevenness of boom dimension exists and without performing the wrong operation even in the case where abrasion is generated. CONSTITUTION: One end of a rectangular spring plate 13 is fastened by a screw 14 so as to ride over a hole 4 provided in a first boom 1, and the other end thereof is pinched by a presser plate 15 fastened freely to be moved by a bolt 16. A sliding plate 20 is installed in a central part of the spring plate 13, and a magnetic sensor 22 is installed in a central part of the sliding plate 23. The spring plate 13 is bent so as to push the sliding plate 20 to a second boom 2, and a magnetic body 5 is attached to the second boom 2 at the predetermined position. Even in the case where unevenness is generated in the boom dimension, adjustment is unnecessary, and wrong operation is not performed even in the case where abrasion is generated.</p> |
