| 摘要 |
<p>PROBLEM TO BE SOLVED: To protect an angle sensor against stone fall by installing a protective cover over a rotation stop flange attached at the end of a coupling pin. SOLUTION: Brackets 12 and 12 on a boom 8 side are rotatably coupled to an arm boss 13 on an arm 9 side through the pin 16. The rotation stop flange 17 is provided at the end of the coupling pin 16, and the connection pin 16 is fixed to the bracket 12. A bottomed hole 16A is provided at the end of the connection pin 16, and the angle sensor 22 is stored in the bottomed hole 16A. The protective cover 26 covering the angle sensor from the outside is disposed so as to press each mounting tube part 26A against the front surface of the rotation stop flange 17. In this state, an installation bolt 27 inserted into each mounting tube part 26A is screwed with the screw hole in the rotation stop flange 17 to fix the protective cover 26 to the rotation stop flange 17.</p> |
