| 摘要 |
A length adjustment device of the guide arm for the oil supply is provided to supply the oil safely since the length of the guide arm is added or subtracted by the compressive force of the torsion spring. A length adjustment device of the guide arm for the oil supply comprises a guide arm(11) in which it becomes the in-between path of the oil treatment reagent, a cylinder(13) of the original shape that surrounds guide arm, a working fluid port for letting in and out the working fluid operating piston. The piston is by turns from side to side in operation in the working fluid port with inflow and the working fluid flowed out.
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